Borosilicate (Pyrex) windows are crafted from premium borosilicate glass, offering low thermal expansion, high-temperature resistance, and exceptional chemical durability. Their thermal stability matches silicon materials, making them ideal for high-temperature and precision optical applications. With broadband transmission from UV to near-IR, they withstand continuous operation at 450℃ and rapid thermal shocks. Chemically resistant to acids, alkalis, and organic solvents, they are widely used in semiconductor lithography, medical devices, laser protection, vacuum systems, and optical instruments. Customizable sizes, shapes, and coatings are available to meet diverse industrial requirements.
Item No :
Borosilicate(Pyrex) WindowsProduct Origin :
FuZhouLead Time :
3-4 weeksSpecifications:
Typical Diameter: | 8.0, 10.0, 12.7, 15.0, 20.0, 25.4, 30.0mm |
Typical Thickness: | 1.0~50.0 |
Diameter Tolerance: | +0.0/-0.1mm |
Thickness tolerance: | ±0.2 (General), ±0.005 (High Precision) |
Clear Aperture: | >80% (Small Size), >95% (Large Size) |
Parallelism: | 3 min (General), 3 sec (High Precision) |
Flatness: | λ/2 (Standard), λ/10 (High Precision) |
Surface Quality: | 60/40 (General), 10/5 (High Precision) |
Protected bevel: | <0.25x45deg |
Coating: | Uncoated, AR, HR, PR, Coating, etc. |
Note for Borosilicate Window:
(1). Custom-made Borosilicate windows at any size are available. Besides round, Borosilicate windows at shape of quadrate, triangular, or other polygonal are available
(2). Thickness from 1.0 mm to 50.0 mm is available upon request.