A fire stopping sealant for fire rated floor or wall penetrations and joints. A nonslump, ready-to-use, 1-component silicone elastomer that bonds to most common construction materials. It meets the new UL water leakage test W rating-Class 1 requirements for systems tested in accordance with UL1479. In addition to ASTM E814 (UL1479 and ASTM E1966 (UL 2079) ratings. Typical applications: Metal pipe, floor and wall penetrations, and floor and wall joints. Color is gray. 10.1 Fl. Oz. cartridge. Service temperature range ASTM C1299 -60 deg. F. to 300 deg. F.