Review on Versachem 23009-12PK Type-2 Gasket Sealant - 3 oz. | Pack of 12 | High-Quality Sealant for Gaskets & More by Andres Callahan

Gasoline proof unlike RTV. It remains flexible even after years, so that the parts can be easily removed and cleaned if necessary. It is designed to be used with paper/cork gaskets to hold them in place and fill in minor imperfections in the gasket surfaces that a gasket cannot. I use old pads of paper all the time, cover them up a bit on each side, and I never have any leaks. This has been my path for over 15 years! In fact, it is a substance similar to TAR.