This is the current situation...(this is a an old cask iron slop sink that came with the house.) There was a leak and we thought it was the p-trap...so we decided to get a PVC one. The other pipes are metal. After we connected the p-trap, there's still a leak...but I can't tell exactly where it is. It could be the metal pipe connection to the sink's drain. You can see that at the top with all the goop around it. I can actually jiggle that joint. (I wonder if it is threaded or they just added enough goop to make a connection (LOL).
Do I need to add thread sealant, pvc tape, etc to all the joints? You can wee that we added some to the joint that connects the p-trap to the wall pipe.
Can this setup work?
Update I ordered a new free standing plastic utility sink and will attempt to connect that to the existing pipe in the wall