{"id":7745,"date":"2026-06-25T16:00:00","date_gmt":"2026-06-25T16:00:00","guid":{"rendered":"https:\/\/jxlampshade.com\/borosilicate-glass-lamp-shade-guide\/"},"modified":"2026-06-26T02:08:53","modified_gmt":"2026-06-26T02:08:53","slug":"guia-de-abajur-de-vidro-de-silicato-de-boro","status":"publish","type":"page","link":"https:\/\/jxlampshade.com\/pt\/borosilicate-glass-lamp-shade-guide\/","title":{"rendered":"Borosilicate Glass Lamp Shades: What It Is &#038; Heat Resistance"},"content":{"rendered":"<p><script type=\"application\/ld+json\">\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@graph\": [\n    {\n      \"@type\": \"BreadcrumbList\",\n      \"itemListElement\": [\n        {\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/jxlampshade.com\/\"},\n        {\"@type\":\"ListItem\",\"position\":2,\"name\":\"Glass Lamp Shades\",\"item\":\"https:\/\/jxlampshade.com\/glass-lamp-shades\/\"},\n        {\"@type\":\"ListItem\",\"position\":3,\"name\":\"Borosilicate Glass Lamp Shades\"}\n      ]\n    },\n    {\n      \"@type\": \"Article\",\n      \"headline\": \"Borosilicate Glass Lamp Shades: What It Is, Heat Resistance & Custom Manufacturing\",\n      \"description\": \"A complete guide to borosilicate glass lamp shades \u2014 what borosilicate glass is, its thermal-shock and heat resistance, safety, borosilicate vs soda-lime glass, and custom\/OEM manufacturing.\",\n      \"author\": {\"@type\":\"Organization\",\"name\":\"JX Lampshade\"},\n      \"publisher\": {\"@type\":\"Organization\",\"name\":\"JX Lampshade\",\"logo\":{\"@type\":\"ImageObject\",\"url\":\"https:\/\/jxlampshade.com\/logo.png\"}},\n      \"datePublished\": \"2026-06-25\",\n      \"dateModified\": \"2026-06-25\"\n    },\n    {\n      \"@type\": \"FAQPage\",\n      \"mainEntity\": [\n        {\"@type\":\"Question\",\"name\":\"What is borosilicate glass?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Borosilicate glass is a type of glass made mainly from silica and boron trioxide (about 12\u201315% B2O3). The boron gives it a very low coefficient of thermal expansion \u2014 around 3.3 x10-6\/K, roughly one-third that of ordinary soda-lime glass \u2014 so it resists cracking from sudden temperature change. It is the same glass family used for laboratory glassware and Pyrex-style cookware.\"}},\n        {\"@type\":\"Question\",\"name\":\"Is borosilicate glass heat resistant?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. Borosilicate glass withstands rapid temperature swings of about 150\u2013165\u00b0C without cracking, compared with roughly 40\u201350\u00b0C for soda-lime glass. It has a softening point near 820\u00b0C and tolerates continuous service temperatures up to about 450\u00b0C, which is why it is preferred for high-output, enclosed and outdoor light fixtures.\"}},\n        {\"@type\":\"Question\",\"name\":\"Is borosilicate glass toxic or safe?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Borosilicate glass is non-toxic and considered very safe. It is lead-free and cadmium-free, chemically inert, and does not leach substances when heated, which is why it is used for laboratory, pharmaceutical and food applications. For lighting, this also means it will not discolour or off-gas under heat.\"}},\n        {\"@type\":\"Question\",\"name\":\"What is the difference between borosilicate and regular (soda-lime) glass?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Soda-lime glass is the cheaper, common glass used for windows and bottles; borosilicate replaces some of its components with boron trioxide. The result is about three times lower thermal expansion, far higher thermal-shock resistance, better chemical durability and a clearer, less greenish appearance \u2014 at a higher cost. For lamp shades exposed to heat, borosilicate lasts longer and is far less likely to crack.\"}},\n        {\"@type\":\"Question\",\"name\":\"Why use borosilicate glass for lamp shades?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Lamp shades sit close to a heat source and, outdoors, to sudden temperature and moisture changes. Borosilicate's low thermal expansion means it resists thermal-shock cracking from hot bulbs, rain on a warm fixture, or wash-down cleaning. It is the standard choice for explosion-proof, industrial, outdoor and high-wattage lighting.\"}},\n        {\"@type\":\"Question\",\"name\":\"Can you make custom borosilicate glass lamp shades?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. As a glass lampshade manufacturer we produce borosilicate shades to custom dimensions, fitter-neck sizes and finishes (clear, opal, frosted, colored), typically from a minimum order of 500 pieces, with smaller trial runs negotiable. Lampwork and tube-formed borosilicate is available for complex or thick-wall industrial profiles.\"}}\n      ]\n    }\n  ]\n}\n<\/script><\/p>\n<style>\n@import url('https:\/\/fonts.googleapis.com\/css2?family=Fraunces:opsz,wght@9..144,300;9..144,400;9..144,500;9..144,600;9..144,700;9..144,900&family=DM+Sans:wght@300;400;500;600;700&display=swap');\n:root{\n  --bg: #FAF7F2;\n  --bg-glass: #F5F1E8;\n  --bg-dark: #1A1614;\n  --bg-darker: #0F0C0A;\n  --text: #1A1614;\n  --text-muted: #6B6560;\n  --text-light: #FAF7F2;\n  --accent: #B8864A;\n  --accent-dark: #8C6435;\n  --accent-light: #D4A574;\n  --border: #E5DFD5;\n  --border-dark: #2A2522;\n  --seo-bg: #FFF9E6;\n  --seo-border: #E8B85A;\n  --seo-text: #5A4214;\n}\n.jxg-guide *{ margin: 0; padding: 0; box-sizing: border-box; }\n.jxg-guide{ font-family: 'DM Sans', -apple-system, sans-serif; background: var(--bg); color: var(--text); font-size: 16px; line-height: 1.65; -webkit-font-smoothing: antialiased; }\n.jxg-guide .container{ max-width: 1240px; 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gap: 36px; }\n.jxg-guide .split-grid{ grid-template-columns: 1fr; gap: 36px; }\n.jxg-guide .rules-grid{ grid-template-columns: 1fr; }\n.jxg-guide .cards3{ grid-template-columns: 1fr; }\n.jxg-guide .related-grid{ grid-template-columns: 1fr; gap: 36px; }\n.jxg-guide .sitemap-grid{ grid-template-columns: repeat(2, 1fr); }}<\/p>\n<p>@media (max-width: 640px) {.jxg-guide .container{ padding: 0 20px; }\n.jxg-guide .section{ padding: 56px 0; }\n.jxg-guide .sitemap-grid{ grid-template-columns: 1fr; }}\n.jxg-guide .intl table.data{color:#E8C896 !important}.jxg-guide .intl table.data thead th{color:#ffffff !important}.jxg-guide .intl table.data tbody td{color:#E8C896 !important}.jxg-guide .intl table.data td:first-child{color:#D4A574 !important}.jxg-guide .jxg-cardwrap{position:relative}.jxg-guide .jxg-stretch{position:absolute;inset:0;z-index:2;font-size:0}.jxg-guide p:empty{display:none !important}.jxg-guide .jxg-cardwrap>p{margin:0 !important;padding:0 !important}\n<\/style>\n<div class=\"jxg-guide\">\n<section class=\"pillar-hero\">\n<div class=\"container\">\n<div>\n<div class=\"pillar-eyebrow\">Material Guide + Manufacturer &#183; Updated June 2026<\/div>\n<h1>Borosilicate Glass Lamp Shades: the glass that <em>won&#8217;t crack<\/em> under heat.<\/h1>\n<p class=\"pillar-lede\"> Borosilicate is the heat-resistant glass used in laboratories and ovenware &#8212; and it is the right choice anywhere a shade sits close to a hot bulb, outdoors, or in an industrial fixture. This guide explains <strong>what borosilicate glass is, how heat-resistant it really is, whether it&#8217;s safe<\/strong>, and how to order shades made from it. <\/p>\n<div class=\"hero-actions\"> <a href=\"#what-is\" class=\"cta cta-lg\">What is borosilicate glass? &#8594;<\/a> <a href=\"#variants\" class=\"cta cta-outline cta-lg\">See shade types<\/a> <\/div>\n<\/p><\/div>\n<div class=\"jumpnav\">\n<h4>On this page<\/h4>\n<ol>\n<li><a href=\"#what-is\">What is borosilicate glass?<\/a><\/li>\n<li><a href=\"#heat\">Is it heat resistant? (the numbers)<\/a><\/li>\n<li><a href=\"#vs\">Borosilicate vs soda-lime vs tempered<\/a><\/li>\n<li><a href=\"#safe\">Is borosilicate glass safe \/ toxic?<\/a><\/li>\n<li><a href=\"#variants\">Borosilicate shade types<\/a><\/li>\n<li><a href=\"#specs\">Manufacturing specs<\/a><\/li>\n<li><a href=\"#applications\">Where it&#8217;s used<\/a><\/li>\n<li><a href=\"#custom\">Custom &amp; OEM \/ wholesale<\/a><\/li>\n<li><a href=\"#faq\">FAQ<\/a><\/li>\n<\/ol><\/div>\n<\/p><\/div>\n<\/section>\n<p> <!-- &#9556;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9559; --> <!-- &#9553; SECTION 2 &#183; WHAT IS &#127919; \"what is borosilicate glass\" (3,600\/mo) &#9553; --> <!-- &#9553; &#9733; The biggest informational magnet &#8212; garboglass ranks here. &#9553; --> <!-- &#9553; Opens with an AI-citable 1-sentence answer box. &#9553; --> <!-- &#9562;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9565; --> <\/p>\n<section class=\"section white\" id=\"what-is\">\n<div class=\"container\">\n<div class=\"section-eyebrow\">The Material<\/div>\n<h2>What is <em>borosilicate<\/em> glass?<\/h2>\n<div class=\"answer-box\"> <span class=\"lbl\">Short answer<\/span> <strong>Borosilicate glass is glass made mainly from silica and boron trioxide (&#8776;12&#8211;15% B&#8322;O&#8323;).<\/strong> The boron gives it a very low thermal expansion &#8212; about one-third that of ordinary glass &#8212; so it resists cracking when the temperature changes suddenly. It&#8217;s the same glass family as lab beakers and Pyrex-style ovenware. <\/div>\n<div class=\"split-grid\">\n<div class=\"svg-wrap\"> <svg viewBox=\"0 0 320 280\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" role=\"img\" aria-label=\"Composition of borosilicate glass: silica around 80 percent, boron trioxide around 13 percent, soda and alumina making up the rest\"> <text x=\"160\" y=\"26\" text-anchor=\"middle\" font-family=\"Fraunces, serif\" font-size=\"15\" fill=\"#1A1614\">Typical borosilicate composition<\/text> <!-- donut --> <circle cx=\"160\" cy=\"150\" r=\"78\" fill=\"none\" stroke=\"#E5DFD5\" stroke-width=\"34\"\/> <!-- silica ~80% -> 288deg --> <circle cx=\"160\" cy=\"150\" r=\"78\" fill=\"none\" stroke=\"#B8864A\" stroke-width=\"34\" stroke-dasharray=\"392 490\" transform=\"rotate(-90 160 150)\"\/> <!-- boron ~13% -> 47deg, offset 288 --> <circle cx=\"160\" cy=\"150\" r=\"78\" fill=\"none\" stroke=\"#8C6435\" stroke-width=\"34\" stroke-dasharray=\"64 490\" stroke-dashoffset=\"-392\" transform=\"rotate(-90 160 150)\"\/> <!-- rest ~7% --> <circle cx=\"160\" cy=\"150\" r=\"78\" fill=\"none\" stroke=\"#D4A574\" stroke-width=\"34\" stroke-dasharray=\"34 490\" stroke-dashoffset=\"-456\" transform=\"rotate(-90 160 150)\"\/> <text x=\"160\" y=\"146\" text-anchor=\"middle\" font-family=\"Fraunces, serif\" font-size=\"26\" fill=\"#1A1614\">SiO&#8322;<\/text> <text x=\"160\" y=\"168\" text-anchor=\"middle\" font-family=\"DM Sans, sans-serif\" font-size=\"12\" fill=\"#6B6560\">+ B&#8322;O&#8323;<\/text> <!-- legend --> <rect x=\"44\" y=\"250\" width=\"11\" height=\"11\" fill=\"#B8864A\"\/><text x=\"60\" y=\"260\" font-family=\"DM Sans\" font-size=\"11\" fill=\"#5A4214\">Silica ~80%<\/text> <rect x=\"150\" y=\"250\" width=\"11\" height=\"11\" fill=\"#8C6435\"\/><text x=\"166\" y=\"260\" font-family=\"DM Sans\" font-size=\"11\" fill=\"#5A4214\">Boron ~13%<\/text> <rect x=\"246\" y=\"250\" width=\"11\" height=\"11\" fill=\"#D4A574\"\/><text x=\"262\" y=\"260\" font-family=\"DM Sans\" font-size=\"11\" fill=\"#5A4214\">Other ~7%<\/text> <\/svg> <\/div>\n<div>\n<p>Ordinary window and bottle glass is <strong>soda-lime glass<\/strong>. Borosilicate keeps the silica backbone but swaps in <strong>boron trioxide (B&#8322;O&#8323;)<\/strong> and a little alumina. That single change reorganises how the glass expands and contracts with heat.<\/p>\n<p>The result is a glass with a <strong>coefficient of thermal expansion around 3.3&nbsp;&#215;10&#8315;&#8310;\/K<\/strong> &#8212; roughly a third of soda-lime&#8217;s ~9&nbsp;&#215;10&#8315;&#8310;\/K. When one part of the glass heats up faster than another, it strains far less, so it doesn&#8217;t crack from &#8220;thermal shock.&#8221; It&#8217;s also clearer (no green tint), harder, and more resistant to chemicals.<\/p>\n<div class=\"callout\"> <strong>Why a lighting maker cares:<\/strong> a lamp shade lives next to a heat source. Borosilicate is the difference between a shade that survives a 100&nbsp;W bulb, an outdoor downpour, or a hot-water wash-down &#8212; and one that quietly hairline-cracks. See the <a href=\"#variants\">borosilicate shade range<\/a>. <\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/section>\n<p> <!-- &#9556;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9559; --> <!-- &#9553; SECTION 3 &#183; HEAT RESISTANCE &#127919; \"heat resistant glass\" (1,000) &#9553; --> <!-- &#9553; + \"is borosilicate glass heat resistant\" \/ \"...temperature\" &#9553; --> <!-- &#9553; &#9733; Data table = featured-snippet bait. &#9553; --> <!-- &#9562;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9565; --> <\/p>\n<section class=\"section\" id=\"heat\">\n<div class=\"container\">\n<div class=\"section-eyebrow\">The Numbers<\/div>\n<h2>Is borosilicate glass <em>heat resistant<\/em>?<\/h2>\n<div class=\"answer-box\"> <span class=\"lbl\">Short answer<\/span> <strong>Yes &#8212; borosilicate withstands sudden temperature swings of about 150&#8211;165&nbsp;&#176;C<\/strong>, versus only ~40&#8211;50&nbsp;&#176;C for ordinary glass. It softens near 820&nbsp;&#176;C and takes continuous service up to about 450&nbsp;&#176;C. <\/div>\n<p class=\"section-intro\">&#8220;Heat resistant&#8221; really means two different things: <strong>thermal-shock resistance<\/strong> (surviving a fast change) and <strong>service temperature<\/strong> (the heat it can sit at continuously). Borosilicate wins on both &#8212; here are the working figures.<\/p>\n<div class=\"tbl-wrap\">\n<table class=\"data\">\n<caption>Key thermal properties of borosilicate glass (typical values).<\/caption>\n<thead>\n<tr>\n<th>Property<\/th>\n<th>Borosilicate<\/th>\n<th>Soda-lime (ordinary)<\/th>\n<th>What it means for a shade<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Thermal expansion (CTE)<\/td>\n<td class=\"hl\">~3.3 &#215;10&#8315;&#8310;\/K<\/td>\n<td>~9 &#215;10&#8315;&#8310;\/K<\/td>\n<td>~3&#215; less strain when heated unevenly<\/td>\n<\/tr>\n<tr>\n<td>Thermal-shock tolerance<\/td>\n<td class=\"hl\">~150&#8211;165 &#176;C &#916;T<\/td>\n<td>~40&#8211;50 &#176;C &#916;T<\/td>\n<td>Survives hot bulb + cold draught \/ rain<\/td>\n<\/tr>\n<tr>\n<td>Max continuous service<\/td>\n<td class=\"hl\">~450 &#176;C<\/td>\n<td>~110 &#176;C<\/td>\n<td>Safe with high-wattage &amp; enclosed fixtures<\/td>\n<\/tr>\n<tr>\n<td>Softening point<\/td>\n<td class=\"hl\">~820 &#176;C<\/td>\n<td>~700 &#176;C<\/td>\n<td>Higher forming &amp; safety margin<\/td>\n<\/tr>\n<tr>\n<td>Chemical durability<\/td>\n<td class=\"hl\">Very high<\/td>\n<td>Moderate<\/td>\n<td>Withstands cleaning chemicals, salt air<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<div class=\"callout\"> <strong>Plain-English example:<\/strong> pour boiling water into a thin soda-lime tumbler and it may crack; the same shock barely registers in borosilicate. For a lamp shade, the everyday version of that shock is a hot bulb meeting a cold open window, or an outdoor fixture caught in the rain. Borosilicate takes it. <\/div>\n<\/p><\/div>\n<\/section>\n<p> <!-- &#9556;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9559; --> <!-- &#9553; SECTION 4 &#183; VS COMPARISON &#127919; \"borosilicate vs soda lime glass\" &#9553; --> <!-- &#9553; \"borosilicate vs tempered glass\" \/ \"difference between...\" (720) &#9553; --> <!-- &#9562;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9565; --> <\/p>\n<section class=\"section white\" id=\"vs\">\n<div class=\"container\">\n<div class=\"section-eyebrow\">How It Compares<\/div>\n<h2>Borosilicate <em>vs<\/em> soda-lime <em>vs<\/em> tempered glass.<\/h2>\n<p class=\"section-intro\">These three get confused constantly. Soda-lime is the cheap default; tempered is soda-lime made stronger by heat-treating; borosilicate is a different chemistry altogether. For lighting, the distinction is real.<\/p>\n<div class=\"tbl-wrap\">\n<table class=\"data\">\n<caption>Lamp-shade glass compared.<\/caption>\n<thead>\n<tr>\n<th>&nbsp;<\/th>\n<th>Borosilicate<\/th>\n<th>Soda-lime<\/th>\n<th>Tempered (toughened)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Resists thermal shock<\/td>\n<td class=\"hl\">Excellent (~150 &#176;C)<\/td>\n<td>Poor (~40 &#176;C)<\/td>\n<td>Moderate (~150 &#176;C, but shatters fully if it fails)<\/td>\n<\/tr>\n<tr>\n<td>Max service temp<\/td>\n<td class=\"hl\">~450 &#176;C<\/td>\n<td>~110 &#176;C<\/td>\n<td>~250 &#176;C<\/td>\n<\/tr>\n<tr>\n<td>Clarity<\/td>\n<td class=\"hl\">High, no green tint<\/td>\n<td>Slight green edge<\/td>\n<td>Slight green edge<\/td>\n<\/tr>\n<tr>\n<td>Can be re-cut \/ drilled<\/td>\n<td class=\"hl\">Yes<\/td>\n<td>Yes<\/td>\n<td>No (must be cut before tempering)<\/td>\n<\/tr>\n<tr>\n<td>Relative cost<\/td>\n<td>Higher<\/td>\n<td class=\"hl\">Lowest<\/td>\n<td>Medium<\/td>\n<\/tr>\n<tr>\n<td>Best lamp-shade use<\/td>\n<td class=\"hl\">Industrial, outdoor, high-wattage, lab\/clean<\/td>\n<td>Indoor decorative, low heat<\/td>\n<td>Safety glazing, large flat panels<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<p class=\"section-intro\" style=\"margin-top:28px;\">For purely decorative indoor shades on low-heat LED fixtures, ordinary or <a href=\"\/product-category\/opal-glass-lamp-shade\/\">opal glass<\/a> is usually fine and more economical. Choose borosilicate when heat, weather or chemical exposure is in play &#8212; see <a href=\"#applications\">where it&#8217;s used<\/a>.<\/p>\n<\/p><\/div>\n<\/section>\n<p> <!-- &#9556;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9559; --> <!-- &#9553; SECTION 5 &#183; SAFETY &#127919; \"is borosilicate glass toxic\" (1,000) &#9553; --> <!-- &#9562;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9565; --> <\/p>\n<section class=\"section glass\" id=\"safe\">\n<div class=\"container\">\n<div class=\"section-eyebrow\">Safety<\/div>\n<h2>Is borosilicate glass <em>toxic<\/em> or safe?<\/h2>\n<div class=\"answer-box\"> <span class=\"lbl\">Short answer<\/span> <strong>No &#8212; borosilicate glass is non-toxic and very safe.<\/strong> It is lead-free and cadmium-free, chemically inert, and does not leach or off-gas when heated, which is exactly why it&#8217;s used for laboratory, pharmaceutical and food glassware. <\/div>\n<div class=\"rules-grid\">\n<div class=\"rule-card\"> <span class=\"ico\">&#8856;<\/span> <\/p>\n<h4>Lead &amp; cadmium free<\/h4>\n<p>Contains no heavy metals to leach. Meets <strong>RoHS<\/strong> and <strong>REACH<\/strong> for export to the EU, US and beyond.<\/p>\n<\/p><\/div>\n<div class=\"rule-card\"> <span class=\"ico\">&#8801;<\/span> <\/p>\n<h4>Chemically inert<\/h4>\n<p>Doesn&#8217;t react with cleaning agents, moisture or salt air, and won&#8217;t <strong>discolour or cloud<\/strong> under a hot bulb over time.<\/p>\n<\/p><\/div>\n<div class=\"rule-card\"> <span class=\"ico\">&#10022;<\/span> <\/p>\n<h4>Stable under heat<\/h4>\n<p>No off-gassing or yellowing at lamp temperatures &#8212; the reason it&#8217;s the standard for <strong>enclosed and high-wattage<\/strong> fixtures.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/section>\n<p> <!-- &#9556;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9559; --> <!-- &#9553; SECTION 6 &#183; VARIANTS &#127919; COMMERCIAL &#8212; \"borosilicate glass lamp &#9553; --> <!-- &#9553; shade\" + finish variants. &#9733; Internal-link hub to Collection pages &#9553; --> <!-- &#9562;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9565; --> <\/p>\n<section class=\"section\" id=\"variants\">\n<div class=\"container\">\n<div class=\"section-eyebrow\">The Range<\/div>\n<h2>Borosilicate glass lamp shade <em>types<\/em>.<\/h2>\n<p class=\"section-intro\">Borosilicate can be blown, pressed or tube-formed, and finished clear or diffused. These are the variants we produce most often &#8212; each links to its full collection.<\/p>\n<div class=\"cards3\">\n<div class=\"shade-card jxg-cardwrap\"><a href=\"\/product-category\/clear-glass-lamp-shade\/\" class=\"jxg-stretch\" aria-label=\"View\">&#8203;<\/a> <\/p>\n<div class=\"shade-fig\"> <svg width=\"120\" height=\"96\" viewBox=\"0 0 120 96\" aria-hidden=\"true\"><ellipse cx=\"60\" cy=\"20\" rx=\"16\" ry=\"5\" fill=\"#FBF6EC\" stroke=\"#B8864A\" stroke-width=\"1.5\"\/><path d=\"M44 20 Q40 60 60 84 Q80 60 76 20\" fill=\"rgba(212,165,116,0.18)\" stroke=\"#B8864A\" stroke-width=\"1.5\"\/><\/svg> <\/div>\n<div class=\"shade-info\"> <span class=\"tag\">Clear &#183; most popular<\/span> <\/p>\n<h3>Clear Borosilicate Shades<\/h3>\n<p>Crystal-clear, no green tint &#8212; for Edison-bulb pendants, industrial and outdoor fixtures.<\/p>\n<p> <span class=\"lnk\">See clear glass shades &#8594;<\/span> <\/div>\n<\/p><\/div>\n<div class=\"shade-card jxg-cardwrap\"><a href=\"\/product-category\/opal-glass-lamp-shade\/\" class=\"jxg-stretch\" aria-label=\"View\">&#8203;<\/a> <\/p>\n<div class=\"shade-fig\"> <svg width=\"120\" height=\"96\" viewBox=\"0 0 120 96\" aria-hidden=\"true\"><ellipse cx=\"60\" cy=\"20\" rx=\"16\" ry=\"5\" fill=\"#fff\" stroke=\"#B8864A\" stroke-width=\"1.5\"\/><path d=\"M44 20 Q40 60 60 84 Q80 60 76 20\" fill=\"#F3ECDD\" stroke=\"#B8864A\" stroke-width=\"1.5\"\/><\/svg> <\/div>\n<div class=\"shade-info\"> <span class=\"tag\">Opal \/ white<\/span> <\/p>\n<h3>Opal Borosilicate Shades<\/h3>\n<p>Even, glare-free diffusion in a heat-tough body &#8212; ideal for hospitality and high-wattage.<\/p>\n<p> <span class=\"lnk\">See opal glass shades &#8594;<\/span> <\/div>\n<\/p><\/div>\n<div class=\"shade-card jxg-cardwrap\"><a href=\"\/product-category\/explosion-proof-glass-lamp-shade\/\" class=\"jxg-stretch\" aria-label=\"View\">&#8203;<\/a> <\/p>\n<div class=\"shade-fig\"> <svg width=\"120\" height=\"96\" viewBox=\"0 0 120 96\" aria-hidden=\"true\"><ellipse cx=\"60\" cy=\"22\" rx=\"20\" ry=\"6\" fill=\"#FBF6EC\" stroke=\"#B8864A\" stroke-width=\"1.5\"\/><path d=\"M40 22 L40 76 Q60 86 80 76 L80 22\" fill=\"rgba(212,165,116,0.2)\" stroke=\"#B8864A\" stroke-width=\"1.5\"\/><line x1=\"48\" y1=\"34\" x2=\"48\" y2=\"74\" stroke=\"#B8864A\" stroke-width=\"1\"\/><line x1=\"60\" y1=\"34\" x2=\"60\" y2=\"78\" stroke=\"#B8864A\" stroke-width=\"1\"\/><line x1=\"72\" y1=\"34\" x2=\"72\" y2=\"74\" stroke=\"#B8864A\" stroke-width=\"1\"\/><\/svg> <\/div>\n<div class=\"shade-info\"> <span class=\"tag\">Industrial &#183; thick-wall<\/span> <\/p>\n<h3>Explosion-Proof Shades<\/h3>\n<p>Heavy-wall borosilicate for hazardous-area, marine and heavy-industry luminaires.<\/p>\n<p> <span class=\"lnk\">See explosion-proof range &#8594;<\/span> <\/div>\n<\/p><\/div>\n<\/p><\/div>\n<p class=\"section-intro\" style=\"margin-top:32px;\">Looking for a specific profile? Browse globe, dome, cone and cylinder forms in the full <a href=\"\/glass-lamp-shades\/\">glass lamp shade range<\/a>, or match dimensions with the <a href=\"\/lamp-shade-sizes\/\">lamp shade size guide<\/a>.<\/p>\n<\/p><\/div>\n<\/section>\n<p> <!-- &#9556;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9559; --> <!-- &#9553; SECTION 7 &#183; SPECS (&#9733; data table) &#8212; long-tail spec queries &#9553; --> <!-- &#9562;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9565; --> <\/p>\n<section class=\"section white\" id=\"specs\">\n<div class=\"container\">\n<div class=\"section-eyebrow\">Made to Spec<\/div>\n<h2>Borosilicate shade <em>manufacturing<\/em> specs.<\/h2>\n<p class=\"section-intro\">What we can produce in borosilicate, as a glass lampshade manufacturer since 1999.<\/p>\n<div class=\"tbl-wrap\">\n<table class=\"data\">\n<caption>Borosilicate glass lamp shade &#8212; production capability.<\/caption>\n<thead>\n<tr>\n<th>Spec<\/th>\n<th>Capability<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Forming methods<\/td>\n<td>Mouth blown &#183; machine pressed &#183; tube \/ lampwork (thick-wall industrial)<\/td>\n<\/tr>\n<tr>\n<td>Diameter range<\/td>\n<td>80mm &#8211; 500mm standard &#183; up to 700mm on request<\/td>\n<\/tr>\n<tr>\n<td>Wall thickness<\/td>\n<td>2&#8211;3mm decorative &#183; up to 5&#8211;6mm industrial \/ explosion-proof<\/td>\n<\/tr>\n<tr>\n<td>Fitter necks<\/td>\n<td>1-5\/8&#8243;, 2-1\/4&#8243;, 3-1\/4&#8243;, 4&#8243; &#183; any custom neck to drawing<\/td>\n<\/tr>\n<tr>\n<td>Finishes<\/td>\n<td>Clear &#183; opal\/white &#183; frosted\/etched &#183; amber &#183; smoke &#183; custom tint<\/td>\n<\/tr>\n<tr>\n<td>Tolerance<\/td>\n<td>&#177;2mm (mouth blown) &#183; &#177;0.5mm (machine pressed)<\/td>\n<\/tr>\n<tr>\n<td>MOQ<\/td>\n<td>500 pcs per SKU (250-pc trial negotiable for new customers)<\/td>\n<\/tr>\n<tr>\n<td>Certifications<\/td>\n<td>CE &#183; RoHS &#183; REACH &#183; SMETA &#183; ISO 9001:2015<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<div style=\"margin-top:32px;\"><a href=\"\/contact-us\/\" class=\"cta cta-lg\">Send a drawing for a quote &#8594;<\/a><\/div>\n<\/p><\/div>\n<\/section>\n<p> <!-- &#9556;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9559; --> <!-- &#9553; SECTION 8 &#183; APPLICATIONS (dark) &#8212; cross-link to application hubs &#9553; --> <!-- &#9553; &#127919; \"borosilicate glass for outdoor\/industrial lighting\" &#9553; --> <!-- &#9562;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9565; --> <\/p>\n<section class=\"section intl\" id=\"applications\">\n<div class=\"container\">\n<div class=\"section-eyebrow\" style=\"color:var(--accent-light);\">Where Borosilicate Earns Its Keep<\/div>\n<h2>When to specify borosilicate.<\/h2>\n<div class=\"answer-box\"> <span class=\"lbl\">Rule of thumb<\/span> <strong>Use borosilicate whenever heat, weather or chemicals reach the shade.<\/strong> For low-heat decorative LED fixtures indoors, ordinary or opal glass is usually enough. <\/div>\n<div class=\"tbl-wrap\">\n<table class=\"data\">\n<thead>\n<tr>\n<th>Application<\/th>\n<th>The stress<\/th>\n<th>Why borosilicate<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Industrial \/ explosion-proof<\/td>\n<td>High wattage, impact, hazardous areas<\/td>\n<td>Thick-wall, thermal-shock &amp; chemical resistant<\/td>\n<\/tr>\n<tr>\n<td>Outdoor &amp; landscape<\/td>\n<td>Rain on a hot fixture, frost, UV<\/td>\n<td>Survives wet\/cold shock; won&#8217;t cloud<\/td>\n<\/tr>\n<tr>\n<td>Restaurants &amp; kitchens<\/td>\n<td>Grease, hot wash-down, long hours<\/td>\n<td>Inert, easy-clean, stable colour<\/td>\n<\/tr>\n<tr>\n<td>Hotels &amp; high-output decorative<\/td>\n<td>100W+ enclosed fittings<\/td>\n<td>No yellowing or cracking at temperature<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<p class=\"section-intro\" style=\"margin-top:26px;color:rgba(250,247,242,0.7);\">Browse shades by setting: <a href=\"\/engineering-lamp-shade\/\" style=\"color:var(--accent-light);\">engineering \/ industrial<\/a>, <a href=\"\/outdoor-lamp-shade\/\" style=\"color:var(--accent-light);\">outdoor<\/a>, and <a href=\"\/restaurant-lamp-shades-for-cafes\/\" style=\"color:var(--accent-light);\">restaurant &amp; caf&#233;<\/a> lamp shades.<\/p>\n<\/p><\/div>\n<\/section>\n<p> <!-- &#9556;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9559; --> <!-- &#9553; SECTION 9 &#183; CUSTOM \/ B2B BRIDGE &#8212; commercial conversion &#9553; --> <!-- &#9562;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9565; --> <\/p>\n<section class=\"section glass\" id=\"custom\">\n<div class=\"container\">\n<div class=\"section-eyebrow\">For Brands, Designers &amp; Projects<\/div>\n<h2>Custom &amp; wholesale <em>borosilicate<\/em> shades.<\/h2>\n<p class=\"section-intro\">Lighting brands, hospitality projects and industrial OEMs rarely fit a stock size. As a <a href=\"\/services\/\">glass lampshade manufacturer<\/a>, we tool borosilicate shades to your exact drawing &#8212; from a single restoration match to a full production run.<\/p>\n<div class=\"rules-grid\">\n<div class=\"rule-card\"> <span class=\"ico\">&#9998;<\/span> <\/p>\n<h4>To your drawing<\/h4>\n<p>Send a sketch, sample or CAD. We confirm formability in borosilicate, neck and tolerance, then sample before tooling.<\/p>\n<\/p><\/div>\n<div class=\"rule-card\"> <span class=\"ico\">&#11042;<\/span> <\/p>\n<h4>Volume &amp; MOQ<\/h4>\n<p>500 pcs per SKU standard, 250-pc trial for new customers; scalable to tens of thousands with stable lead times.<\/p>\n<\/p><\/div>\n<div class=\"rule-card\"> <span class=\"ico\">&#10003;<\/span> <\/p>\n<h4>Export-ready<\/h4>\n<p>CE \/ RoHS \/ REACH \/ ISO 9001, full export packing, and 150+ country shipping experience since 1999.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<div style=\"margin-top:32px;\"><a href=\"\/contact-us\/\" class=\"cta cta-lg\">Request a borosilicate quote &#8594;<\/a><\/div>\n<\/p><\/div>\n<\/section>\n<p> <!-- &#9556;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9559; --> <!-- &#9553; SECTION 10 &#183; RELATED (&#9733; internal link spine) &#9553; --> <!-- &#9562;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9565; --> <\/p>\n<section class=\"section white\">\n<div class=\"container\">\n<div class=\"section-eyebrow\">Keep Exploring<\/div>\n<h2>Related <em>material &amp; shade<\/em> guides.<\/h2>\n<div class=\"related-grid\">\n<div class=\"related-col\">\n<h3>By material &amp; finish<\/h3>\n<ul class=\"related-list\">\n<li><a href=\"\/product-category\/opal-glass-lamp-shade\/\"><span class=\"title\">Opal Glass Lamp Shades<\/span><span class=\"meta\">Collection<\/span><\/a><\/li>\n<li><a href=\"\/product-category\/clear-glass-lamp-shade\/\"><span class=\"title\">Clear Glass Lamp Shades<\/span><span class=\"meta\">Collection<\/span><\/a><\/li>\n<li><a href=\"\/product-category\/colored-glass-lamp-shade\/\"><span class=\"title\">Colored Glass Lamp Shades<\/span><span class=\"meta\">Collection<\/span><\/a><\/li>\n<li><a href=\"\/product-category\/explosion-proof-glass-lamp-shade\/\"><span class=\"title\">Explosion-Proof Glass Shades<\/span><span class=\"meta\">Collection<\/span><\/a><\/li>\n<\/ul><\/div>\n<div class=\"related-col\">\n<h3>Choosing &amp; ordering<\/h3>\n<ul class=\"related-list\">\n<li><a href=\"\/lamp-shade-sizes\/\"><span class=\"title\">Lamp Shade Sizes: Measure &amp; Choose<\/span><span class=\"meta\">Guide<\/span><\/a><\/li>\n<li><a href=\"\/lamp-shade-shapes\/\"><span class=\"title\">Lamp Shade Shapes: Visual Guide<\/span><span class=\"meta\">Guide<\/span><\/a><\/li>\n<li><a href=\"\/services\/\"><span class=\"title\">Custom Glass Lamp Shades (OEM \/ ODM)<\/span><span class=\"meta\">Service<\/span><\/a><\/li>\n<li><a href=\"\/glass-lamp-shades\/\"><span class=\"title\">Replacement Glass Lamp Shades<\/span><span class=\"meta\">Service<\/span><\/a><\/li>\n<\/ul><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/section>\n<p> <!-- &#9556;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9559; --> <!-- &#9553; SECTION 11 &#183; FAQ (&#9733; FAQPage schema = the differentiator) &#9553; --> <!-- &#9562;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9565; --> <\/p>\n<section class=\"section glass\" id=\"faq\">\n<div class=\"container-narrow\">\n<div class=\"section-eyebrow\">Common Questions<\/div>\n<h2>Borosilicate glass <em>FAQs<\/em>.<\/h2>\n<div class=\"faq-list\">\n<details open>\n<summary>What is borosilicate glass?<\/summary>\n<p>Borosilicate glass is made mainly from <strong>silica and boron trioxide (about 12&#8211;15% B&#8322;O&#8323;)<\/strong>. The boron gives it a very low coefficient of thermal expansion &#8212; around 3.3&nbsp;&#215;10&#8315;&#8310;\/K, roughly a third of ordinary soda-lime glass &#8212; so it resists cracking from sudden temperature change. It&#8217;s the same glass family used for lab glassware and Pyrex-style cookware. <a href=\"#what-is\">See the full breakdown &#8594;<\/a><\/p>\n<\/details>\n<details>\n<summary>Is borosilicate glass heat resistant?<\/summary>\n<p>Yes. It withstands rapid temperature swings of about <strong>150&#8211;165&nbsp;&#176;C<\/strong> without cracking, versus roughly 40&#8211;50&nbsp;&#176;C for soda-lime glass. It softens near 820&nbsp;&#176;C and tolerates continuous service up to about 450&nbsp;&#176;C &#8212; which is why it&#8217;s preferred for high-output, enclosed and outdoor fixtures. <a href=\"#heat\">See the numbers &#8594;<\/a><\/p>\n<\/details>\n<details>\n<summary>Is borosilicate glass toxic or safe?<\/summary>\n<p>It&#8217;s <strong>non-toxic and very safe<\/strong>: lead-free, cadmium-free, chemically inert, and it doesn&#8217;t leach or off-gas when heated. That&#8217;s exactly why it&#8217;s used for laboratory, pharmaceutical and food glassware &#8212; and why it won&#8217;t discolour under a hot bulb. <a href=\"#safe\">More on safety &#8594;<\/a><\/p>\n<\/details>\n<details>\n<summary>What&#8217;s the difference between borosilicate and regular glass?<\/summary>\n<p>Regular glass is <strong>soda-lime<\/strong> &#8212; cheap, used for windows and bottles. Borosilicate swaps in boron trioxide, giving about <strong>three times lower thermal expansion<\/strong>, far higher thermal-shock resistance, better chemical durability and clearer colour, at a higher cost. <a href=\"#vs\">See the comparison table &#8594;<\/a><\/p>\n<\/details>\n<details>\n<summary>Why use borosilicate glass for lamp shades?<\/summary>\n<p>Shades sit close to heat and, outdoors, to sudden temperature and moisture changes. Borosilicate&#8217;s low thermal expansion means it resists thermal-shock cracking from hot bulbs, rain on a warm fixture, or wash-down cleaning. It&#8217;s the standard for <a href=\"\/product-category\/explosion-proof-glass-lamp-shade\/\">explosion-proof<\/a>, industrial, <a href=\"\/outdoor-lamp-shade\/\">outdoor<\/a> and high-wattage lighting.<\/p>\n<\/details>\n<details>\n<summary>Can you make custom borosilicate glass lamp shades?<\/summary>\n<p>Yes. We produce borosilicate shades to <strong>custom dimensions, fitter-neck sizes and finishes<\/strong> (clear, opal, frosted, colored), typically from a minimum order of 500 pieces with smaller trial runs negotiable. Tube-formed \/ lampwork borosilicate is available for thick-wall industrial profiles. <a href=\"\/services\/\">Start a custom shade &#8594;<\/a><\/p>\n<\/details><\/div>\n<\/p><\/div>\n<\/section>\n<p> <!-- &#9556;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9559; --> <!-- &#9553; SECTION 12 &#183; BOTTOM CTA &#9553; --> <!-- &#9562;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9565; --> <\/p>\n<section class=\"bottom-cta\">\n<div class=\"container\">\n<div class=\"section-eyebrow\" style=\"color:var(--accent-light);justify-content:center;display:inline-flex;\">Specifying borosilicate?<\/div>\n<h2>Tell us the heat, the size and the finish &#8212; we&#8217;ll <em>make the glass<\/em>.<\/h2>\n<p>From a single explosion-proof replacement to a full hospitality or lighting-brand run, send your spec or drawing and we&#8217;ll quote in 24 hours. Heat-resistant borosilicate, opal and custom glass shades &#8212; manufacturer since 1999.<\/p>\n<div class=\"bottom-cta-actions\"> <a href=\"\/contact-us\/\" class=\"cta cta-light cta-lg\">Request a Quote &#8594;<\/a> <a href=\"\/services\/\" class=\"cta cta-outline cta-lg\" style=\"color:white;border-color:white;\">Explore Custom Service<\/a> <\/div>\n<\/p><\/div>\n<\/section>\n<p> <!-- &#9556;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9559; --> <!-- &#9553; SECTION 13 &#183; SITEMAP (site-wide cluster network) &#9553; --> <!-- &#9562;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9552;&#9565; --> <\/div>\n","protected":false},"excerpt":{"rendered":"<p>Material Guide + Manufacturer &#183; Updated June 2026 Borosilicate Glass Lamp Shades: the glass that won&#8217;t crack under heat. Borosilicate is the heat-resistant glass used in laboratories and ovenware &#8212; and it is the right choice anywhere a shade sits close to a hot bulb, outdoors, or in an industrial fixture. This guide explains what [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"elementor_header_footer","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"default","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"class_list":["post-7745","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/jxlampshade.com\/pt\/wp-json\/wp\/v2\/pages\/7745","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jxlampshade.com\/pt\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/jxlampshade.com\/pt\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/jxlampshade.com\/pt\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/jxlampshade.com\/pt\/wp-json\/wp\/v2\/comments?post=7745"}],"version-history":[{"count":9,"href":"https:\/\/jxlampshade.com\/pt\/wp-json\/wp\/v2\/pages\/7745\/revisions"}],"predecessor-version":[{"id":7778,"href":"https:\/\/jxlampshade.com\/pt\/wp-json\/wp\/v2\/pages\/7745\/revisions\/7778"}],"wp:attachment":[{"href":"https:\/\/jxlampshade.com\/pt\/wp-json\/wp\/v2\/media?parent=7745"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}