Check the listing for details. Meeco's Red Devil Gray Fireplace Mortar. Condition: New. Listed at 16.95 USD. Pre-mixed, ready-to-use high temperature silicate cement. Designed for patching or repairing cracked or chipped firebrick and mortar. Multi-purpose cement for bonding and sealing both masonry and metals with working temperatures up to 2,000-Degree F. Effective in re-setting and cementing furnaces, stoves, chimney collars, boilers and duct work. Gray in color. Pre-mixed, ready-to-use high temperature silicate cement. Designed for patching or repairing cracked or chipped firebrick and mortar. Multi-purpose cement for bonding and sealing both masonry and metals with working temperatures up to 2,000-Degree F. Effective in re-setting and cementing furnaces, stoves, chimney collars, boilers and duct work. Gray in color.Pre-mixed, ready-to-use, high-temperature cement/mortarDesigned for patching or repairing cracked or chipped firebrick and mortarWithstands working temperatures up to 2,000-Degrees FGray in colorMade in the USA