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.

Why Choose JSG Borosilicate Glass?

Glass Products

Glass Specialties

  • Restoration of Original Pressed Glass
  • HR-39-Low Expansion Borosilicate Glass
  • Specialty Formulated Glass
  • Pressed Glass 

Capability, Quality, Reliability

At Jeannette Specialty Glass, we manufacturer a wide range of industrial and commercial borosilicate glass products in stock, but it's our capability to remain an industry leader after 106 years that answers the question: "Why Choose JSG Borosilicate Glass?"

  • From scientific equipment to industrial / military applications, JSG's unique borosilicate glass offers durability, corrosion resistance, and low thermal expansion.
  • JSG is your reliable manufacturing partner in delivering custom mold work and one-of-a-kind pressed glass solutions. 
  • Chosen for glasswork in landmark buildings, international monuments, and commercial masterpieces.  Visit our Case Studies page to learn more.
  • Learn more about Jeannette Specialty Glass, with our long history in the heart of America's glass making region.

Contact Jeannette Specialty Glass today to learn how your project can become our dedicated mission.  With competitive quotes, unsurpassed quality, and dependable delivery, JSG is your first choice, the best choice!

Borosilicate Glass Manufacturing Capabilities

Fresnel LensesBenefits

  • Borosilicate Glass "HR-39" - Proprietary Formulation Clear Colorless Glass (not green) unaffected by Weather, Sunlight and other factors
  • Durability - Chemical, Scratch, Stain, and Thermal Shock Resistant; Superior Heat Resistance
  • Private Mould Work
  • Custom Glass Design Products
  • Competitive Quotes
  • Dependable Delivery
  • Stock in our 120,000 square foot manufacturing facilities
  • Made in the U.S.A.

Glass Properties & Capabilities

  • Refractor Lenses from Jeannette Specialty GlassClear Colorless Glass (not green)
  • Borosilicate Glass
  • Non-Weathering
  • Non-Yellowing
  • Non-Fading
  • UV Resistant
  • Non-Discoloring
  • Chemical Resistant
  • Thermal Shock Resistant
  • Superior Heat Resistant
  • Low-Expansion
  • Pressing and Molding Capabilities
  • Restoration of Original Pressed Glass
  • Automatic Machine Production

Equipment Capacities & Glass Specifications

  • In House Moulds at Jeannette Specialty GlassAutomatic Presses
  • Continuous Melting Furnace

Finishing Capabilities

  • Heat Strengthening
  • Core Drilling
  • Waterjet Cutting
  • Grinding
  • Ceramic Painting
  • Sand Blasting
  • Organic Coatings

All products from Jeannette Specialty Glass are made by experienced glass technicians and artisans in the USA. To learn more, visit our Products, Custom Lenses, and Quality Control pages, or Contact JSG Today.  You'll find out why our customer service has a reputation every bit as good as the teams on our glass factory floor!   

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