The seal kit I have came with a cork gasket for the Ball Collar.

The seal at the torque tube is more like a quad ring, its tan in color and looks like rubber impregnated with cork.

I was under the truck this afternoon and slipped the collar back on the torque tube. I could see the seal turning and no steel washer.

I’ll try posting in parts wanted. Maybe someone who upgraded might have 2, or be able to give me dimensions.
Thanks