Gasket silicon marker Liquid, RTV Sensor-Safe Blue, Temp -65°F to 500°F (-54°C to 260°C), 3oz/85g Tube, Carded. PERMATEX (80022), Features: OEM specified. The original Permatex Blue now with low odor formula. Will not foul oxygen sensors. Replaces almost any cut gasket. Makes reliable “formed-in-place” gaskets that resist cracking, shrinking and migrating. Coats pre-cut gaskets to increase reliability. Temperature range -65°F to 500°F (-54°C to 260°C) intermittent; resists auto and shop fluids.