AFM is a chemically blown, compounded nitrile synthetic rubber bonded to an aluminum core with temperature resistance of over 250°F. AFM material has an 85 percent recovery while maintaining strong torque retention. AFM does not require gasket sealers or re-torque.
Ford Windsor .047 " Fiber Intake End Seals Kit, Ford Racing N351 Sportsman Cylinder Head M-6049-N351
