Gardner Gibson 5000 Flame Stopper Intumescent Sealant (Box of 12)

An Advanced Flexible Intumescent Acrylic Latex Fire Stop Sealant designed to seal surfaces with or without movement. It "intumesces" or expands when exposed to extreme heat, cutting off the spread of fire through penetrations. Will not crack or deteriorate where vibrations occur. Stops the spread of toxic fumes, smoke and fire and dries to a red flexible seal. Apply in interior or exterior applications. Dried product can be painted. Meets/exceeds UL 1479, NFPA Class A, ASTM E-136 and E-119, complies with SBCCI, BOCA, ICBO and IRC 2000. 10 oz.