Made in the USA
Made in the USA 
Borosilicate Glass Manufacturer of Lenses, Reflectors, Refractors

Borosilicate Glass Refractors and Reflectors

Refractor - 5" - Item# 30055-O, C
5" - Item# 30055-O, C

Refractor - 6"  - Item# 30065-O, C, FO, 30063-O, C, FO
Refractors 6" 
- Item# 30065-O, C, FO,
30063-O, C, FO

Refractor - 8" - Item # 30082-C, O, 30085-C, O
Refractors 8"
- Item # 30082-C, O,
30085-C, O

Refractor - 12" - Item # 30125-C, O, 31022-C, O, 31023-C, O
12" - Item # 30125-C, O,
31022-C, O, 31023-C, O

6323 Reflector
6323 Reflector

6433 Reflector
6433 Reflector

6939 Reflector
6939 Reflector

710065 Reflector
710065 Reflector

Thermal Resistant Borosilicate Glass

Borosilicate Glass

Jeannette Specialty Glass is a borosilicate (heat-resistant) glass manufacturer of lenses, reflectors, refractors and more. Low expansion borosilicate glass ideal for commercial, industrial, and mechanical needs.

Contact JSG or request a quote today to learn how we can bring your project to life with glass. 

At Jeannette Specialty Glass, our refractors and reflectors are made from JSG's own borosilicate glass formula.  Our famous "Hard Roc" glass is thermal shock and strain tested to meet your most demanding applications.

  • Clear Colorless Glass (not green) unaffected by Weather, Sunlight and other factors
  • Borosilicate Glass "HR-37" - Proprietary Formulation
  • Durability - Chemical, Scratch, Stain, and Thermal Shock Resistant

Jeannette Specialty Glass offers a variety of in-stock refractor lenses and reflectors.

Please select the item of your choice to see individual specifications.


Various Refractor Lenses from Jeannette Specialty GlassReflectors

Please don't hesitate to contact Jeannette Specialty Glass today to place your order for some of the finest reflectors and refractors on the market today.    

High Volume or Custom Glass Production

If you have a custom order or a large order, JSG is ready to meet your needs.  We have the capacity for large production runs as well as the master craftsman and experienced glass technicians to handle any order.  Contact us today to learn more.

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