3M Fire Barrier Silicone RTV

3M(TM) Fire Barrier Silicone RTV Foam Part B 2001 40 Pound (40 Lb Kit, Part B) A medium-density, two-part silicone elastomer supplied as A and B liquid components designed for use as a fire, smoke, noxious gas and water sealant. 2001 Silicone RTV Foam is a medium-density, two-part silicone elastomer supplied as A and B liquid components designed for use as a fire, smoke, noxious gas and water sealant. 2001 Silicone RTV Foam is designed to seal large and/or complex penetrations.