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Quality Borosilicate, Quartz & Cobalt Blue Flat Glass In Stock

Available in custom sizes to fit your specifications. Choose from:

  • Plain Borosilicate (Clear): For temps up to 446°F (230°C); 1/4" or thicker recommended. Max 150°F temperature differential.
  • Tempered Borosilicate (Clear): Withstands up to 500°F (260°C); ideal for higher pressure. Not for corrosive or rapidly changing environments.
  • Cobalt Blue Furnace Glass (Blue): Reduces glare for viewing flame, smoke, and ash in boilers. Up to 1/4" thick. Cobalt Blue Vicor discontinued.
  • Fused Quartz (Clear): Continuous use up to 1742°F (950°C); standard commercial grade, optical grade on request.

Pricing Notes:

  • Sizes under 144 sq. in. priced at next larger size.
  • Ground edge pricing available for 1/16"–1/4" thick glass.
  • $25.00 order minimum.

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