Michael,

I might not understand your questions.

In order to install new u-joint bell/ball seals, you have to disconnect the u-joint assembly and slide the yokes apart.

Here is the parts kit (you should use all new seals/gaskets):
https://www.classicparts.com/1935-54-U-Joint-Ball-Gasket-Seals/productinfo/92-111/

Here is the gasket adjustment procedure (UNIVERSAL BALL JOINT ADJUSTMENT) in the Shop Manual.

I think my seals have been cork.