Felcoid/Plus gaskets have a fiber sheet core and a latex rubber coating to eliminate potential leakage pathsCore material resists crushing and splitting and has excellent blowout resistanceMeets or exceeds all original equipment specificationsEngineered and manufactured specifically for repair applicationsUnsurpassed quality you can trustFel-Pro Performance Gaskets keep engines sealed under the most grueling racing conditions, from stock car racing to drag racing to off-road.