[Beav]

You can try to position the seal a little ahead of or behind the groove, if possible (just make sure its O.D. is fully inserted into place.) Or, a number of companies, Chicago Rawhide for example, make 'wear rings', very thin bands of highly polished steel that 'slip' over the groove - 'slip' being a relative term. It takes a bit of patience to install them correctly, the thin metal will distort easily if a heavy hand is use. Talk to your local parts store.