Is there a trick to sealing threaded PVC??

[CarlD]

Now THAT is a cool idea! But if you use it around a threaded fitting, it will be permanent...

[Sumo1]

Now THAT is a cool idea! But if you use it around a threaded fitting, it will be permanent...

Yes, it will be permanent but I don't see that as a problem. PVC rarely just breaks so I think long-term fixes are good and, in our case, replacement of a multi-port valve would be required$$.
Hal

[cleancloths]

It is best to never use teflon tape on any threaded connection over about 1". For connections over 1" use the teflon pipe dope, it does a much better job.