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  • Need help with leak in P trap under bathroom sink?

    I undid the P trap under my bathroom sink to clear a clog and now when I put the whole thing back together it leaks out of the top of the slip joint that connects the down pipe from the sink drain to the j-pipe. The down pipe is 1 - 1/4" and the j-pipe is 1-1/2" and I am using the correct reducer gasket. It was not leaking (and never had) before I took it apart. I have tried using a new gasket and teflon tape on the threads of the slip joint to no avail. Please give me some idea as to what the problem might be. Here is a link to a couple of pictures to show the general set-up and the specific problem:

    Thanks to anyone that can help.

    6 AnswersDo It Yourself (DIY)1 decade ago