Gasket VC CorkRubber Jeep 87 - 95 4.0L Inline Six 532 Thick Fabricated from performance CRC (core - reinforced - composite), Edelbrock valve cover gaskets provide excellent sealing integrity and conformability for easy installation. The multi - layer construction has two highly compressible, high rubber content, fiber - reinforced outside layers which are chemically bonded to a high strength composite core. This unique core - reinforced construction has a radial strength to resist high - vacuum or blow - out conditions.