I had a leak a couple of days ago from the old bathtub overflow gasket which I then replaced with a brand new one. I have no idea since when it started leaking but good thing I caught it. The problem I have right now is that the new gasket doesn't seem to seal properly. I filled up the bathtub of water to make sure everything was all good but then I saw it was still leaking. Any idea?
I see three potential problems.
- The hole isn't very round, which would cause uneven compression of the gasket. You could Dremel out that hump at the top.
- The pipe is misaligned. It seems to be sitting high, which would cause the gasket to be overly tight at the top and loose at the bottom. See if there's any way to adjust. Fixing #1 could help with this.
- You're not tightening it enough. Soft rubber/neoprene gaskets can handle a lot of deformation, but it takes force.