High-quality products for long term reliabilityManufactured from premium fuel-resistant materials that will not creep, crack or become brittleGaskets available in multiple types to best suit the intended applicationExtreme Sealing Technology (EST) gaskets feature embossed steel gaskets covered with a proprietary rubber material or solid copper, depending on the applicationMulti-Layer Steel (MLS) gaskets feature two outer Viton-coated embossed spring steel layers with an inner steel layer to provide additional supportSingle-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 surfacesAluminum 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 sealerViton gaskets feature a stainless steel core with a .001" thick coating of Viton rubber on both sides