OEM specified. Permatex� Ultra silicones were developed to meet today�s technology changes. Sensor-safe, low odor, noncorrosive. Outstanding oil resistance and joint movement values. Eight times more flexible than cork/composite gaskets; three times more oil resistant than conventional silicones. Temperature range -65�F to 500�F (-54�C to 260�C) intermittent; resists auto and shop fluids and vibration.