High-quality products for long-term reliability, Gaskets available in multiple types to best suit the intended application, Manufactured from premium fuel-resistant materials that will not creep, crack or become brittle, Multi-Layer Steel (MLS) gaskets feature two outer Vitonﾮ-coated embossed spring steel layers with an inner steel layer to provide additional support, Extreme Sealing Technology (EST) gaskets feature embossed steel gaskets covered with a proprietary rubber material or solid copper, depending on the application, Vitonﾮ gaskets feature a stainless steel core with a .001ﾔ-thick coating of Viton rubber on both sides, Aluminum Foamette Material (AFM) gaskets feature an aluminum core and a chemically blown, compounded nitrile synthetic rubber coating that is bonded to the outside layer; do not require gasket sealer, Single-Layer Steel (SLS) gaskets feature a stainless steel core and embossed outer surfaces that create a heavy-duty seal between the center steel layer and the gasket mating surfaces, CFM is a composite material with a steel tang center laminated to provide excellent heat tolerance without delaminating while providing a long lasting seal, Made in the U.S.A.