Installing axel seals

Pic of the seal?
Check the bore for roundness with something just a shade smaller in diameter,centered in the bore.

My buddy threw in the towel for the day so I left. The new seal is now trashed also. He can get ahold of the proper tool to install them next week so he is going to hold off until he gets it. I brought up the possibility that maybe the tube is no longer round but he seemed convinced that our homemade tool was the issue.