White Lightning W44017010 Fire and Smoke Sealant, Red, 40 to 120 deg F, 10 oz Cartridge

White Lightning® flame BUSTER® high-heat fire and smoke blocking latex caulk is a one component caulk designed to resist high-temperatures and smoke in non-rated construction. It is most commonly used around wires, pipes, ducts and vents in wood or steel framed non-rated construction.