Super 300 has been discontinued according to Permatex. I purchased a bottle about 2 years ago on Amazon to do Ol' Roy's water pump, I used it recently for the pushrod cover and valve cover.

Permatex recommends a substitute for Super 300 called Aviation Form-A-Gasket #3.

Part #80017 or #80019 (part numbers refer to different size bottles)


1950 Chevrolet 3100 (Ol' Roy)

1939 Packard Standard Eight Coupe (The Phantom) | 1956 Cadillac Coupe de Ville (The Bismarck) | 1964 Ford Galaxie 500 coupe |1966 Ford Mustang (Little Red) | 1969 Pontiac GTO (The Dishpit) I 1979 Ford F-100 | 1976 Ford F-150 (Big Red) | 1995 Ford F-150 (Newt)