{"product_id":"cobalt-blue-borosilicate-glass","title":"Cobalt Blue Borosilicate Glass — Industrial Sight Glass \u0026 Level Gauge Glass","description":"\u003ch2\u003eCobalt Blue Borosilicate Glass for Industrial Applications\u003c\/h2\u003e\u003cp\u003eCobalt blue borosilicate glass is a specialty industrial glass produced by incorporating cobalt oxide into the borosilicate glass matrix. The distinctive deep blue color serves a functional purpose in industrial environments: it reduces glare from bright process flames and high-intensity light sources, making it easier for operators to observe fluid levels and process conditions in boilers, furnaces, and high-temperature reactors.\u003c\/p\u003e\u003ch2\u003eKey Properties\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eDeep cobalt blue tint — reduces glare from flames and radiant heat sources\u003c\/li\u003e\n\u003cli\u003eBorosilicate glass 3.3 base — superior thermal shock resistance\u003c\/li\u003e\n\u003cli\u003eOperating temperature: up to 450°C continuous\u003c\/li\u003e\n\u003cli\u003eChemical resistance to acids, alkalis, and process fluids\u003c\/li\u003e\n\u003cli\u003eMeets DIN 7080 \/ DIN 7081 standards for sight glass applications\u003c\/li\u003e\n\u003cli\u003eAvailable in flat disc, strip, and custom-cut formats\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTypical Applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBoiler drum level gauge glass (replacement for standard clear glass)\u003c\/li\u003e\n\u003cli\u003eSight glasses on furnaces and combustion chambers\u003c\/li\u003e\n\u003cli\u003eHigh-temperature reactor observation windows\u003c\/li\u003e\n\u003cli\u003eRefinery and petrochemical process sight glasses\u003c\/li\u003e\n\u003cli\u003eSteam generator level indicators\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eAvailable Formats\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eFlat gauge glass strips (DIN 7080 \/ 7081 standard sizes)\u003c\/li\u003e\n\u003cli\u003eCircular sight glass discs (custom OD\/ID)\u003c\/li\u003e\n\u003cli\u003eCustom shapes and dimensions on request\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eContact us for technical specifications, standard size availability, and bulk pricing for industrial procurement and MRO supply.\u003c\/p\u003e","brand":"LinkGlass","offers":[{"title":"Default Title","offer_id":49044643971384,"sku":"","price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0873\/1181\/0872\/files\/cobaltblueglass.jpg?v=1742085995","url":"https:\/\/www.sightglasstube.com\/de\/products\/cobalt-blue-borosilicate-glass","provider":"SightGlassTube","version":"1.0","type":"link"}