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Calcium Silicate Block

Thermo-1200 calcium silicate ("calsil") block is a high temperature, water resistant insulation. It can be used in applications with temperature ranges from ambient up to 1200°F. calcium silicate inhibits corrosion and is extremely durable. Block insulation is available as Flat Block and 3-V Scored and thicknesses ranging from 1" to 4-1/2".

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