Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions Product Features:Performance exhaust header gasket consisting of a high-density fiber facing material attached to both sides of a perforated steel core.Resists blowout and burnout from high-temperature exhaust and is far stronger than basic paper gaskets.Anti-stick coating permits motion without damaging the gasket and makes it easier to remove the gasket for future engine service.Not intended for use in emission controlled vehicles.