Meeco's Red Devil Gray Furnace Cement and Fireplace Mortar, 10.3 oz. is a versatile, premixed high-temperature silicate designed for bonding and sealing both masonry and metals. It withstands working temperatures up to 2,000 degrees Fahrenheit, making it i for patching or repairing cracked or chipped firebrick and mortar. This durable mortar is for resetting and cementing furnaces, stoves, chimney collars, boilers, and ductwork. Please note, it is not intended for exterior use. The product comes ready to use in a convenient 1 pint bucket container, ensuring ease of application and reliable performance. Model Number: