I let my outdoor Mansfield frostproof faucet leak for too long, and the seat is now visibly damaged, so it won't seal completely even with a new washer. I have a home repair book that suggests using a seat grinder to restore the surface of a damaged faucet, but the illustration shows a bathroom type faucet. Anyone know if a grinder is available that can reach into a frostproof faucet, or will it be necessary to replace the faucet?
I don't know the model number (looked briefly, maybe I missed it if it's not conspicuous). It takes a 1/2" washer (size 00).