Made in the USA
Made in the USA 
724.523.5567
Borosilicate Glass Manufacturer of Lenses, Reflectors, Refractors
IF YOU CAN DESIGN IT, WE CAN PRODUCE IT.

In House Moulds

Borosilicate Heat-Resistant Glass Manufacturing Capabilities

Borosilicate Glass
Manufacturer

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, we're known for our exceptional borosilicate heat-resistant glass manufacturing capabilities, including more than 500 "in-house" moulds crafted especially for the demanding glasswork JSG provides for commercial, industrial, and military glass needs.

When we say "Made in the U.S.A." we mean it. Our 120,000 square foot manufacturing & warehouse facilities, located in Jeannette, PA (the Glass City) has the depth of glass manufacturing resources other providers can only dream of.

Our specialty glass products are created using JSG's own proprietary HR-39 "Hard Roc" borosilicate glass.  That means:

Contact JSG today for more information on our In-House Moulds and the industry leading glass manufacturing capabilities you've been looking for.    

 

 

 

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