These seals are out there. The same seal was used on '41-'55.1 2-speed rears. Try your local Chevy dealer and ask for part #3651493. They might locate one through the dealer network. You could also try part number searches at Partsvoice or Collector Auto Supply .

If you can get the pinion flange off, you might be able to see the part numbers on the seal for cross referencing.


Curt
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1953 Chevy 6400, 1957 Chevy 2dr Sedan
--"Mediocrity is easy, the good things take time"