I have a clog somewhere along that pipe and need to open it to snake it, but I don't know if I'm supposed to loosen the putty(?) that's around the threads with a solvent or heat or something. Is there a specific wrench to use or will any pipe wrench work?
For that matter, when I do need to re-thread it, what compound do I use to seal it? Do I have to clean out all of the old stuff before re-threading it?