I just bought and used a bottle of Liquid Plumber but I was just worried about whether the stuff might be able to corrode the rubbery seal under and around the top of the bathtub drain. I live on a second floor apartment and the walls of my shower are already corroded enough to leak below, but that was patched. I meanwhile have a lingering phobia of leaks and was just wondering if I should be concerned about this seal. I can visibly see the seal. My apartment–a condo which I "own"–is about 18 years old, as is this bathtub.
Will Liquid Plumber Foaming Pipe Snake corrode the drain seal on the bathtub
bathtubdrainleak
Related Solutions
It sounds like it could either be a cracked breaching piece (between the to taps where the spout screws on) or it could be the spindles leaking.
There is a o-ring in the spindles that stops water from coming out of the tap casing when the water is on. to check the o-ring take of the handles and cover flange turn the taps on with the sprayer turned off, is water coming out of the taps?
If not you can either cap off the fitting where the spout is connected and turn the water on and try and here/see water leaking or hook a pressure gauge up to the spout connection turn the water on then back off and see if the pressure drops when the water is off showing a leak in the breaching piece. How to pressure test
Your tub has an overflow drain. You just have to find it. Remove the two screws next to the combination drain toggle & overflow plate. Now gently pull up to reveal the overflow hole and the drain plug:
Get out your snake (you've got a snake, right?) and thread it down the newly revealed hole. Also remove the single screw holding the drain screen. Use some sort of semi-flexible plastic rod to clean out the horizontal section of the drain (a suitable tool comes with some bottles of drain cleaner, else you can improvise).
Don't bother with drain cleaner -- it is not right for your situation.
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Best Answer
I think the answer is going to be "it depends on what that rubbery seal is actually made of" -- here's the quote from the Liquid Plumbr FAQ --
Is the part with the rubber seal removable? If so, remove it before you use the liquid plumbr.