Seller is great. I purchased two rear main seals for my 56 Cadillac Deville, replacing the failed original rope seal. Both seals did not help the leak and using a mic, found the seals to be barely touching the journal on the sealing surface, allowing oil to continue to leak. Similar seals for other model engines from the Best Gasket Co have worked fantastic, but for this application, they do not work.
Had to pull engine to replace and install new rope seal.