For installation and service of furnaces and oil burners. Makes joints smoke and gas tight. Can be used as a temporary muffler repair. Seals flues and coal or ash pit doors. For small woodstove repairs. Withstands temperatures up to 2000-degree fahrenheit. High-temperature silicate cement with a smooth consistency. No toxic fumes during heat curing. Cures as hard as firebrick. Does not contain asbestos.

Size=1/2 Pint

Color=Black