Oem Specified. Permatex(R) 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.