American Standard Faucet O-Ring Replacement

The never-sufficiently-to-be-damned O-rings in the kitchen’s American Standard faucet wore out again; the faucet spout went from a tolerable piddle to a major flow over the course of a few weeks.

The inner circumference of the bottom O-ring had most of the wear:

American Standard faucet - worn lower o-ring

American Standard faucet – worn lower o-ring

In cross-section, it’s more of a D-ring:

American Standard faucet - worn lower o-ring - section

American Standard faucet – worn lower o-ring – section

Once again, I soaked the spout & pillar in vinegar to remove the mineral deposits (despite the soft water), gave them a light sanding with 800 grit paper to regularize the surfaces, cleaned everything up, lubed it with petroleum jelly, and it’s all good.

Disassembly and replacement went smoothly, mostly because I could look up what I did before and avoid all the usual mistakes.



  1. #1 by Red County Pete on 2016-07-19 - 13:19

    I got a small tube of plumber’s lube at Home Desperate. If I’m recalling correctly, it has a little bit of beeswax (or similar) to help it to stay on the rubber. I gave up on single handled faucets a few years ago, but still have some Delta bathroom sink repair kits left over.

    • #2 by Ed on 2016-07-19 - 13:25

      I’m sure my 800 grit sandpaper doesn’t leave the right surface finish, but it’s way better than what was there before I started. Maybe the rings will last a bit longer; I’m sure the petroleum jelly I used this time has already worn away.

      • #3 by Red County Pete on 2016-07-20 - 11:05

        Oops, I dug out the tube and figured out the relevant MSDS. It’s “non-hazardous”, but as a petroleum product thickened with fume-formed* silica**, it’s intended use for stem-lubrication seems to be it’s best function. Your solution sounds a lot better for your application.

        Note 1*: Take silane, add a measured quantity of oxygen, and watch the snowflakes form. I ran into the flakes as waste, but somebody makes it as a production material.

        Note 2**: A tech at work once told me of his experience with fume-formed silica. He ordered a small-weight quantity of the stuff (less than 50 pounds, maybe 10). It arrived in 10 55 gallon drums. That stuff is light!