Permatex® Water Pump & Thermostat RTV Silicone Gasket Maker


A noncorrosive, sensor-safe RTV silicone gasket material formulated specifically for water pumps and thermostat housings. Highest water-glycol resistance available in an RTV silicone.



Suggested Applications: Water pump and thermostat housings


Suggested Applications: Water pump and thermostat housings



Surfaces should be clean and dry. Apply an even, continuous 1/8" bead of silicone to one surface, surrounding all bolt holes. Remove excess at once with knife. Assemble parts immediately. Do not squeeze out silicone by over tightening bolts. Silicone fully cures in 24 hours. Replace cap after use. Clean hands with dry cloth or Fast OrangeĀ® hand cleaner. Clean tools with non-flammable cleaning fluid.

Note: Not recommended for use on head gaskets or parts in contact with gasoline.
US Part Number Canada Part Number Container Size Pack
22071 31866 .5 oz. tube, carded 6