Denny, you should be able to find a large O-Ring to replace the cork seal. It would strech enough to pass over the splines and go in between the two metal compression washers. Try the filling station they should have the o-ring you need.
"If it ain't Steel it ain't Real" "Earth the insane aslyum for the rest of the Universe" 41 1/2-ton, a work in progress 68 Shortbed stepside 327/325hp/700R4
