All of our gaskets meet or exceed OEM quality.Composite head gaskets include a steel core nd a state-of-the-art facing material, featuring a patented transparent coating, to improve thesealing property and prevent corrosion.Metal head gaskets are made of stainless steel, featuring a patented thermoplastic coating, to help compensate for all possible micro-imperfections of the engine surfaces.Our fiber gaskets are made from materials providing the best mechanical and tensile strength resistance.Gaskets come with anti-stick silicon beading(where applicable).