Premixed, ready-to-use high temperature silicate cement. A multipurpose cement for bonding and sealing both masonry and metals with working temperatures up to 3000 deg. F. Designed for patching or repairing cracked or chipped firebrick and mortar. Effective in resetting and cementing furnaces, stoves, chimney collars, boilers, and duct work. Not for exterior use. Black.