01-07-21 02:00 PM - Post#2811589 In response to Russ
You don't need an extra seal. The outside of the bearing has a seal and the o-ring should come withe the bearing.
The retainer has a gasket but is not sealed to the axle. If the bearing should leak, the retainer has a indention to allow grease to go through a hole in the backing plate and not get on the brake shoes.
Don
66 Corvair (driving)
57 2dr HT (driving)
56 2dr HT (waiting to be restored)