Permatex's Gear Oil RTV Sealant resists the effects of friction modifiers found in newer gear oils and will prevent leaks and ensure proper performance in harsh drivetrain environments. Gear Oil RTV can be used as a differential case sealant or as a drain plug gasket, and can withstand age and weathering. It is sensor safe, non-toxic, nonflamable and has a low odor. It is available in a 3 oz. or 5 oz. carded tube with pinpoint nozzle for accurate dispensing.