Reinstalled my transmission last night. Went to get the u-joint, bolts and cover that slides on the drive shaft and over the u-joint to seal it. When I got the cover, I noticed that the screw on ring seal that seals the cover to the drive shaft was missing. Now likely my 4yr old or 6 yr old was messing with it and lost it.

Question: What is the name of this screw on seal piece, and are you able to order it from somewhere?

Thanks for the help

1950 Chevy 3100 Blog w/Pics - http://txchevy50.blogspot.com/
Goal: Clean, Rebuild, Paint, & Drive on a budget. Major restore of components will be done over time.