• Annealed Borosilicate (Clear): For general service up to 446F (230C). Use 1/4" or thicker glass; max 150F temperature differential.
• Tempered Borosilicate (Clear): Handles up to 500F (260C) and higher pressure than annealed. Not for corrosive or extreme thermal shock environments.
• Cobalt Blue Borosilicate (Blue): Reduces glare for clear flame, smoke, and ash observation in boilers and furnaces. Up to 1/4" thick.
• Fused Quartz (Clear): Ideal for labs and high-temp industrial use; continuous operation up to 1742F (950C). Optical grade available on request.

Applications: Furnaces, ovens, observation ports, flow indicators, pressure vessels, and tanks.
Tempering Benefits: Enhances strength, scratch resistance, and thermal shock durability.
Shipping: Standard lead time 5-7 days; expedited options available.
Minimum Order: $25.00

• Borosilicate Spec Sheet.pdf
• Fused Quartz Data Sheet.pdf
• Glass-Terms-and-conditions.pdf