Plumbing question

[viktor]

Had my main sewer rodded.  The threads where the clean out plug connects (some are damaged) so the clean out plug doesn't tighten well.  Can I use a different type of plug (i.e., test plug) to seal the pipe?  I tried to tighten as much as I could put want to get a better seal.   Any help or information is appreciated.

[berwyn senator]

I had the same problem,the plumber took a wire brush lightly on the threads.Then he smeared a black gasket sealer booth sides of the threads,replacing the cap and lightly tightening,problem was solved.The sealer can be purchased at most automotive stores,has been used on cars for years.Sorry I can't remember the name,I sure Berwynson has the answer.

[berwyn senator]

I did not mention you might need a new cap,as the old ones corrode over the years.