8 3/4 rear axle seal question

I'm re-installing the axles in the 8 3/4 I've got in my 56 pump, my question is the rear bearings look good there just the stock style, I've replaced the foam gasket at the backing plate and have OEM mopar rear seal kits with the metal compression gasket, my plan was just to wash the bearings out with brake clean and re-pack with fresh bearing grease but the outer seal in the flange plate I cant change with out removing the bearing is it normal to just re-use those ones?