Milmeyer Gaskets Primary Rebuild Kit C9125 Aluminum Foamette Material (AFM) gaskets feature an aluminum core with a chemically blown, compounded nitrile synthetic rubber bonded to the outside Gaskets have resistance to temperatures of more than 2500 degrees F Have an 85% shape-recovering while maintaining strong torque retentionideal gasket material for machined surfaces Does not require gasket sealer Kits include all gaskets, seals and O-rings required for both the inner and outer primary