Dap 18854 High Heat Mortar Sealant

Black High Heat Mortar 10.1 oz – A non-combustible silicate cement. – For patching and sealing around fireplaces and wood-burning stoves. – Withstands temperatures up to 2000 degrees F. Sets rock hard when fired. – Water clean-up. A non-combustible silicate cement for applications in wood-frame construction where and ASTM E 136 sealant is required. Can also be used for patching and sealing around fireplaces and wood-burning stoves. Withstands temperatures up to 2000 degrees F. Sets rock hard when fired. Easy water clean-up.