Black Silicone RTV Gasket is a room temperature vulcanizing sealant for bonding, waterproofing and insulating most materials. Cures in 1 hour. Fully cures in 24 hours. Replaces any shape or size cork, asbestos, felt, rubber, paper or metal gasket in minutes. Bonds to metal, plastics, glass, vinyl, rubber, leather, fabrics, wood, tile and ceramics. Ideal for hundreds of sealing applications in the home or shop.