Metacaulk 1000 Series 66640 Intumescent Firestop Sealant, Red, 10.3 oz Cartridge

One component, general purpose fire rated sealant and smoke seal for construction joints and through-penetrations. Extremely intumescent, non-sag caulking grade sealant. Cures to an elastomeric seal that is suitable where dynamic movement is expected. 10.3 oz covers about 18 cu-in.