That is what I understand, yes, that is the correct seal.
The way you can figure this out, if you have a Packard Part # that you have a cross-reference to, and want to see what other applications that part works for, use the "Factory Parts List" feature on this website, for example:
Factor Parts List lookup 333546 I don't believe there is a cross-reference for the Rear Pinion Seal, there was a different seal used from prior years on 1953 and 1954, you have to get it from Max Merritt
Rear Pinion Seal, 1953-1954, Max Merritt or Kanter
Kanter Rear Axle Parts, 1953-1954This Post was from: https://packardinfo.com/xoops/html/modules/newbb/viewtopic.php?post_id=255411