Gluedevil Grey Gasket Maker Forms A Permanent Flexible Sealing Compound Which Can Be Used To Replace Felt, Rubber, Cork, Paper, And Asbestos Gaskets. Makes Instant Gaskets On Valve Covers, Water Pumps, Oil Pans, Rear End Covers, Thermostats, Outlets, Timing Gear Covers And Wherever Else You Need A Leak Proof Gasket.