Borosilicate Glass Windows for Sale – High Clarity, Thermal Shock Resistant Optical Glass

Borosilicate Glass Windows for Sale – High Clarity, Thermal Shock Resistant Optical Glass: Ideal for use in laboratories and industrial settings where thermal stability is crucial.

Borosilicate is the alternative for borofloat 33 (BF33). Therefore, this kind of glass is called high borosilicate glass.

Our Borosilicate window has high transmittance in the visible and near-infrared regions, making it ideal for a wide range of optical applications. It boasts a unique combination of excellent optical clarity and durability, allowing it to perform well in harsh environments.

Borosilicate Window Characteristics & Specification

Borosilicate glass windows are widely used in a variety of applications due to their high thermal and chemical resistance, as well as their excellent optical properties. They are commonly used in scientific and industrial settings for applications such as microscopy, spectroscopy, and chemical processing.

Material：Borosilicate

Diameter：1 to 500 mm

Diameter Tolerance：+0/-0.02 mm

Thickness Tolerance：±0.01 mm

Surface Quality：10-5

Surface Figure：λ/10

Parallelism：1 Minute

FAQs of Boro Glass

What is borosilicate glass made of?

A: Borosilicate glass is made of silica and boron trioxide.

What is the coefficient of thermal expansion of borosilicate glass?

A: The coefficient of thermal expansion of borosilicate glass is very low, which means that it can withstand rapid temperature changes without cracking or breaking.

Can borosilicate glass be used in harsh chemical environments?

A: Yes, borosilicate glass is highly resistant to chemical corrosion, making it ideal for use in harsh chemical environments.

Product Specifications

Product Date 2026
Delivery cycle within 1 month
Customize Support
Price Quotation
Exit Support
OEM Quotation
Supplier Henan Fandewei Automobile Products CO.,LTD
Delivery Method Land transport/Ocean transport, etc.
User Manual provide
Shippable Areas Southeast Asia and Global

Procurement Recommendation

Borosilicate glass windows must deliver high optical clarity (>90% transmission in visible spectrum), low thermal expansion (3.3 × 10⁻⁶/K), and resistance to thermal shock up to 150°C differential. Used in viewports, sensors, or laser enclosures, they should be available in custom diameters and thicknesses with polished edges and optional AR coatings. Source from suppliers providing surface flatness specs (λ/4 or better), scratch-dig ratings (e.g., 60-40), and cleanroom packaging to prevent contamination. Verify compliance with ASTM E438 or DIN ISO 719 for hydrolytic resistance. Avoid annealing-stress defects that cause birefringence in imaging systems. Ideal for harsh environments in chemical processing or aerospace—select manufacturers with CNC grinding capabilities and batch certification to ensure dimensional and optical consistency across large orders. (for reference only)

Due to market conditions, product updates, and policy changes, please contact the supplier for the latest information.