Because parts of that whole assembly are prone to leaking, especially when doing a "reseal" with used seals/gaskets, whenever I disconnect the enclosed driveline at the u-joint, I spend the $$ on the gasket kit:

https://www.classicparts.com/1935-54-U-Joint-Ball-Gasket-Seals/productinfo/92-111/

Tim
1954Advance-Design.com
1954 3106 Carryall Suburban
1954 3104 5-window pickup w/Hydra-Matic
The 216 and early 235 engines are not "splash oilers" -- this is a splash oiler.