Quality Borosilicate Flat Glass Circles In Stock

Annealed Borosilicate - Clear: Ideal for normal service with one surface heated to a maximum of 446°F (230°C) using 1/4" or thicker glass. The temperature difference between ambient and process should not exceed 150°F.

Tempered Borosilicate - Clear: Recommended for higher pressure applications than annealed borosilicate can handle. Maximum service temperature is 500°F (260°C). Not suitable for corrosive environments or severe temperature changes.

Cobalt Blue Borosilicate Furnace Glass - Blue: Reduces glare when observing flame, smoke, and ash intensity in power plants and marine boilers. Available in thicknesses up to 1/4".

Fused Quartz - Clear: Suitable for industrial and laboratory applications, with continuous use at 1742°F (950°C). Commercial grade is standard; optical grade is available upon request.

Best Used In: Furnaces, Ovens, Observation Equipment, Flow Indicators, Pressure Vessels/Tanks

Tempering: Tempering greatly increases the strength of glass, making it more resistant to scratches and surface defects. This creates compressive stress on the surface and tensile stress within, enhancing mechanical strength, impact resistance, and thermal shock resistance.

Shipping:

• Expedite quick ship times available upon request with standard shipping in 5-7 days.
• $25.00 minimum order required.