Common enough press in oil seal with spring round inner edge.
For a 5/16" shaft, 7/8" across outside and 1/4" thick.
Anyone know where I should start looking for one? I can't think of any suppliers around this area.
Thanks all.
I was on the way to finding what you need here, but the site crashed before I got to enter the 'thickness' measurement - it was looking good for the other 2 though . Maybe a phone call to them if the site remains recalcitrant might prove fruitful?