OSI Fire Block Foam (Carton of 12)

OSI Fire Block Foam is a low-pressure minimal expanding polyurethane foam in a pressurized metal canister for use on wood, concrete, brick, metals, cable jacketing, and PVC piping. It is meant to be used for Type V_A, occupancy group R3 and R5 ( wood frame) buildings as a sealant to resist the migration of fire and hot gases. It becomes a flexible, urethane foam when cured that is effective against the passage of smoke and toxic gases.