The replacement o-rings I received from Perlick for their 630SS faucets fit too tightly in the end of the faucets. They work but are constantly tearing and being lost altogether at times.

Has anyone found a source for a custom size o-ring that fits snugly enough to form a good seal in this particular faucet, but not so snug that it tears up the o-rings in a relatively short time?

Applying sanitary lube helps, but I would prefer to find a better fitting o-ring that doesn't require regular lubrication. Lube is messy and also doesn't fare well for long in sanitizer.