I have stainless kitchen sink, PVC tailpiece is attached to the stainless strainer with the PVC slip nut. It leaks from there occasionally, and it seems that PVC nut is jumping the threads on the stainless sink strainer. I think I fixed the leak by just re-tightening the PVC leak, but not sure if it is going to hold.
Kitchen sink and dishwasher connecting into the tailpiece were done by the professional plumbers.
Is it a bad idea to use PVC nut on stainless strainer threads? Should I get a metal slip nut? Stainless or brass nut?
Can metal slip nut still work with the PVC tailpiece, or should I replace PVC tailpiece with the metal one also? Would any special fitting then required between the metal tailpiece and the PVC P-trap?

Thanks,

I like to use the heavy chrome plated brass nuts on sink strainers if at all possible and plastic tailpieces. If you are getting leaks and the connection is snug, your tailpiece washer may be cracked or missing.

Thanks,
it doesn't seem to leak when it is snug, but if I replace the slip nut I'll replace the the washer too just in case. Are the plastic and brass slip nuts using different washers?

the washers are the same. make sure to use real brass not plated steel.
a dab of grease on the male threads makes the nut tighten easier.

Just replace the plastic nut with a metal one. Some drains, especially stainless steel ones, have a rolled thread which does not have good grooves for a plastic nut to engage.



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