That link doesn't seem to answer your question. If you don't get an answer tonight, I will dig in to my spare set of rings to see if I can help. They usually have some type of cutaway on the inner top of the top ring to cause the ring to seal better under extreme pressure.


1951 GMC 1 Ton Flatbed -- It is finally on the road and what a great time I have driving it!
1951 1 Ton Completed


My Chevy Master 4 Door is on the Road!