Meeco's Red Devil Furnace Cement & Fireplace Mortar, 10.3 oz. is a premixed, multi-purpose high-temperature silicate designed to bond and seal both masonry and metals withstanding working temperatures up to 2,000 degrees Fahrenheit. This versatile mortar is i for patching or repairing cracked or chipped firebrick and mortar, making it for resetting and cementing furnaces, stoves, chimney collars, boilers, and ductwork. It comes ready to use in a convenient 1 pint bucket container. Please note that this product is not intended for exterior use. Model Number: