JEGS Oil Pan Gaskets help keep the oil where it belongs - in your motor! The Hi-Per Blue oil pan gaskets are a unique blend of nitrile and cork granules. They swell up 30% for maximum sealing. They provide better torque retention. The DrySeal+ oil pan gaskets are made from a high temperature silicone and feature a metal core to resist blowouts and vacuum pressure. Made In USAJEGS Cross Reference Guide