Heat Stop 40

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HEATCAST 40 is a medium weight refractory castable product. It is also sometimes used in place of firebrick; or it may be cast into special shapes for woodstoves, fireplace hearths , walls, boilers, furnaces, and other high temperature applications. Heat Cast 40 was designed for casting special shapes for woodstoves, fireplace hearths and sidewalls and other high temperature applications. Available in a 40-lb bag. Castable weights approximately 120 lbs. per cubic ft. and is shipped in a 40 lb. bag. For estimating purposes approximately 20 lbs. will cover one square ft., two inches thick. Add clean water (3/4 to 1 qt.) for each 10 lb. and mix thoroughly. No other additives required. May be cast or troweled into place. Meets ASTM C-401 Class B. Possesses cold crushing strength of approximately 1500 lbs. per. sq. inch. Good for applications well over 2000°F. HEAT CAST-40 should be cast no thinner than 1 1/2 to 2 inches thick. This product is non water soluble in service. Show more