Product Description ------------------- 10.1 oz, red, fire blockade caulk, meets astm e-814/UL 1479 specifications, expansion fills void created by combustible materials burned during a fire, treats all general fire stopping applications for combustible & non-combustible penetrations, excellent adhesion to unprimed surfaces, red color for easy inspection. From the Manufacturer --------------------- Fire-rated silicone sealant adheres to Steel, Copper, Plastic, Fiberglass, Concrete, Drywall, Wood, for use with standard caulk gun.