A speedi-sleeve is a stainless steel sleeve about .005" thick that fits snugly over the yoke shaft. It provides a new surface for the seal. NAPA has these parts and I think CarQuest has them as a set.

1951 GMC 1 Ton Flatbed -- It is finally on the road and what a great time I have driving it!
1951 1 Ton Completed

My Chevy Master 4 Door is on the Road!