Alkali-Resistant Mica Glass
Lumiglas Gen-2 Alkali-Resistant Mica Glass is engineered for pH 8-14 environments. Reinforced with ZrO2, Y2O3, and La2O3 for extreme durability in caustic soda and high-temp (600°C) boilers.
Circle sight glass
Circular sight glass — borosilicate, soda-lime, quartz & sapphire windows. high-temp viewports, high-pressure viewports, and corrosive-resistant viewports.
Showing all 10 results
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Aluminosilicate Glass Sight Discs — Up to 70 MPa & 375°C, DIN 7080 Compatible
Lumiglas aluminosilicate glass sight discs: alkali-free RO-Al₂O₃-SiO₂ composition, rated 70 MPa & 375°C, 260–300 MPa bending strength. DIN 7080 compatible, Ø10–800 mm.
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Borosilicate Instrument Window Cover
Borosilicate instrument window cover for instruments & gauges. High thermal & chemical resistance, custom sizes, datasheet & COA available. Buy replacement covers.
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DIN 7080 Sight Glass | Borosilicate Disc (280°C / 200 Bar) | Lumiglas®
DIN 7080 borosilicate sight glass disc — also referenced as DIN7080 or DIN-7080. Thermally toughened Borosilicate Glass 3.3, rated −100°C to +280°C, pressures to 200 bar (special dimensions). EN 10204-3.1 certificate supplied as standard. Direct dimensional replacement for MAXOS® sight glass discs across the full standard size range.
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DIN7080 Borosilicate Glass (with Center Hole)
The DIN7080 sight glass with center bore is a standard industrial sight window disc used for level gauges and inspection ports.
It is available in borosilicate glass (high-temperature, chemical-resistant), tempered soda-lime, and sapphire on request.
We supply DIN7080-certified discs, test reports, and custom sizes for OEMs and plant replacements. -
DIN8902 Soda-Lime Tempered Glass (Tempered Sight Windows)
DIN8902 soda-lime tempered glass provides an economical, safety-tempered viewing window for general industrial equipment, lighting front panels and instrument displays. Available in standard stocked sizes or CNC cut to custom diameters and thicknesses.
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JIS B8286 Tempered Sight Glass — Pressure Vessel Viewports
Certified tempered sight glass manufactured to JIS B8286 for pressure vessel visual access. Available in soda-lime tempered, borosilicate, fused silica (quartz) and sapphire options; stocked sizes and custom machining with batch COA and tempering reports.
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LUMIGLAS® Ultra-Low Temperature High-Pressure Glass — CDW273 Series | Rated −273°C to +600°C
LUMIGLAS® CDW273 ultra-low temperature glass rated −273°C to +600°C, 70 MPa. Four grades: LMX8603, LMX5016, LMX205, LMX9901. Rare earth formula. For LNG, cryogenic & petrochemical service.
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Rupture Disc — Precision Burst Safety Device
Ultra high pressure tempered glass rupture disc for precise overpressure protection. Batch-tested burst performance, ASME-aligned selection guidance and high-pressure options up to extreme ranges.
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Sapphire Glass — High-Strength Sapphire Windows & Viewports
Sapphire glass windows and viewports for harsh environments. High hardness (Mohs 9), wide transmission, high temperature & abrasion resistance. Datasheets & custom sizes available.