Plumber's grease safe with ABS plastic?

DIYGST · Nov 5, 2013

I have a drain clean out plug that I think I can tighten it a little bit more, just barely pass hand tight,
It feels the plastic threads are not too lubricated, but I don't want to force with the wrench and risk cracking the stucco it is embedded in.

anyway, would a little plumber's grease on the threads harm the plastic?
Is the plug like a large pipe thread that it gets tighter as it seals?

joecaption · Nov 5, 2013

Use Teflon pipe dope instead.
It will lube and seal at the same time.

DIYGST · Nov 5, 2013

Thanks, that did the trick, I was able to get the plug to go in a couple more turns with the fitting with about the same power applied, and it sits flush.

There was standing water at the threads when I took it out, the dope should take up the space and not allow this anymore.

joecaption · Nov 5, 2013

Why was there standing water?
Are you sure the drains not plugged up? There should have been no standing water.

DIYGST · Nov 5, 2013

In my case the clean out plug is only about 2 inch away from the actual drain.

I imagine there is some water splashes as things go down.

Plus when I started this thread my plug was not properly tightened so the water probably collected on the threads.

Plumber's grease safe with ABS plastic?

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