Hard Fire Bricks (High Density / Super Duty) - Foundry Service & Supplies, Inc.

Foundry Service supplies Hard “Super Duty” and “Medium Duty” Fire Bricks that are rated for superior strength in applications of over 3000ºF (1650ºC). They exhibit low shrinkage, excellent thermal shock resistance, and good resistance to alkali and carbon monoxide disintegration.

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A dry mix cement just add water sets and dries as hard as fire brick. Use to cast custom shapes replace worn-out fire brick or fill large holes in masonry firebox or as a solid stone bed. May also be used to build or repair outdoor fire pits. For indoor or outdoor projects. Rated to withstand up to 2200 degreef. Does not require heat to cure. Minimum 24 hour dry time. May be painted when dry. Approximate coverage: 12 1/2 lbs casts a block 12in x 12in x 1 1/2in. Tan.

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WireJewelry High Density/Super Duty Hard Fireclay Brick, Rated Up to 3200 Degree Fahrenheit - 2 Pack : Tools & Home Improvement