all4spl

so i am replacing the seals on a used c6 z06 differential. This is going in my c5 so i am doing the c5 pinion cover to delete the oil cooler. I ordered a C5 cover and o ring for the pinion and upon trying to install them, there was a paper gasket with bolt holes on the diff instead of an o ring. So i am trying to source the paper gasket and am wonder if i use anaerobic sealant on that too like you do on the size axle plates with the o rings. Thanks!