Castable refractory cement repairs bricks and firebox linings. It doesn't contain asbestos. It is heat-proof in temperatures up to 1204 °C or 2200 °F. You can use this refractory cement in the building of new fireboxes. The versatile mix is castable into custom shapes for original designs. Or you can use it to make a solid stove bed. It's also useful for filling cracks and holes in masonry fireboxes. It repairs furnaces, wood and coal stoves and free-standing fireplaces. It also works great in outdoor fire pits.