Permatex Ultra Grey RTV Silicone Gasket Maker3.5oz 82194Permatex Ultra Grey offers a non-corrosive formula that is ideal for high torqe and vibration. This high performance gasket maker meets OEM specifications for silicone gaskets.Benefits of Ultra Grey Gasket Maker Low-odor non-corrosive formula; OEM Specified; High torque and rigidity; Ideal for tight bolt patterns; This gasket maker is ideal for water pumps, intake manifold end seals, thermostat housings, and valve covers.