Rear Wheel Bearing Cap O-Ring Seal, IRS Type 1 & 3 '69 & Later

This is the o-ring that fits in the groove of the wheel bearing cap that holds the rear backing plate in place.  It is smaller in diameter than the earlier swing axle o-rings, which are often mistakenly used for that application.  For IRS (Independent Rear Suspension) late model cars, no paper gasket is used, either...  Just this o-ring and (of course) the wheel seal around the stub axle.

Sold each.  You'll need 2 to do both sides.