Rear axle backing plate gaskets – which should I use?

Hello!

I pulled the center section out of the rear end of my '65 Fury to replace it with a Sure Grip. To get the axles out, I pulled the backing plates from the axle housing. The axles are held in by a retaining ring on the brake side of the backing plate. In between the axle housing and the back side of the backing plate is a gasket that looks to be make out of whitish plastic, which Napa had in stock.

However, between the retaining ring and the backing plate, one side has a...

Rear axle backing plate gaskets - which should I use?
Author: barsteel