Permatex Ultra Silicone RTV Gasket Makers OEM specified. Single component, room temperature vulcanizing gasketing compound designed to provide reliable formed-in-place gaskets for mechanical assemblies. Cures on exposure to moisture in the air to form a tough, flexible, silicone rubber gasket. Resists aging, weathering and thermal cycling without hardening, shrinking or cracking. Sensor safe, non-corrosive, low odor Pack of 1