BOSS® 888 Neutral RTV Silicone Gasket maker is a paste-like, one component material, which cures to a tough, rubbery solid upon exposure to moisture in the air. Formulated for gasket making applications. Sensor safe and manufactured to meet OEM specifications. Makes instant, leak proof gaskets for all engines, drive train equipment, and related components. Resists oil, water, antifreeze, and transmission fluid. Provides exceptional leak control and torque retention.