CRC Maniseal Exhaust Cement


https://crcindustries.com.au/products/maniseal-exhaust-cement-145g-5061.html

Here's the one I actually used most recently on a 1956 Cadillac.

Walker Exhaust Putty 35958

https://www.amazon.com/Dynomax-35958-Hardware-Muffler-Cement/dp/B000CQHVLI/ref=sr_1_4?crid=27VZJ2NFTHI9V&keywords=muffler+cement&qid=1685318149&sprefix=walker+muffler+cement%2Caps%2C12715&sr=8-4


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)