WHAT DOES ALUMINIUM BACK UP RINGS MEAN?

Aluminium Back Up Rings This extrudate will promptly be nibbled away creating a reduction of material, and as soon as ample product is misplaced, seal failure will speedily stick to.Turns out that my mechanic did not clear away my hub centric rings before putting on my Wintertime set of tires. So I had to take a seat there until my backup support v