I have installed an American Standard tub faucet stem p/n 9c-23h/c. Still leaks. Both seats have been replaced also. I've rechecked work. I'm not
Lost. Any suggestions?
Vince Nicastro.

Hello Vince,

I hate to say it, but you will have to go back and re-check your installation. Remove the stem and seat and re-install it. If you installed only one stem, it may be leaking from the other (old) one. Replace them both.

I am sure you will tackle it this time. Let us know how you did

Back to you

Milo