Hercules Furnace & Stove Pipe Cement, 1/2 Gallon

Hercules, 1/2 gallon, furnace & stove cement, use to seal & repair boilers, furnaces, fireboxes, flue pipes, stoves, ducts, kilns, chimneys, combustion chambers, & many other furnace & refractory applications, unique patented formula meets ohsa requirements of less than 0.1% of crystalline silica content, applies exceptionally smoothly, can be used on oil, gas, coal, & wood-burning heating systems, adheres to most building materials, will not shrink, crack, or crumble.