The straight vertical piece of metal pipe (Likely 1.5" diameter) that
attaches to the bottom of the kitchen sink is leaking extremely slowly at
the nut at the top of the pipe that attaches to the sink. The pipe's top
nut has a crack in it. This piece of pipe also has a bottom nut (same size)
that attaches to the PVC trap below. The vertical piece also has a small
metal connection where the dishwasher drain pipe is clamped to it.
Tried using epoxy but it still leaks extremely slightly. I'm almost
comfortable not doing anything more about it.
1) Should I still have it fixed now, by replacing the cracked metal nut, or
wait and maybe try some more epoxy or caulk?
2) To replace the cracked metal nut, do I need to buy a whole new vertical
piece of pipe, or is there a way to just remove the old nut and put on a new