PVC union help - leaking

[aquatechy]

Hi guys,

Im having a bit of trouble with one of my PVC Unions. I was doing some plumbing modifications on one side the union, and when I screwed it back together Im getting a very slow leak from the threads on the union itself (not from where it connects to the pipes). Ahhhhh! Leaks are so frustrating. Any tips on how I can fix this??

Thanks.

[reefwars]

Originally Posted by aquatechy

Hi guys,

Im having a bit of trouble with one of my PVC Unions. I was doing some plumbing modifications on one side the union, and when I screwed it back together Im getting a very slow leak from the threads on the union itself (not from where it connects to the pipes). Ahhhhh! Leaks are so frustrating. Any tips on how I can fix this??

Thanks.

teflon tape

[aquatechy]

Really? Right onto the union's threads? I thought we weren't supposed to do that??

[reefwars]

ive used and seen it used many times whats the issue??

[mark]

o-ring okay?

[Nate]

Check the o-ring not designed to be teflon taped...

[Delphinus]

Could be as simple as a grain of sand on the O-ring .. doesn't take much. Check for nicks or abrasions too. Worst case scenario, you can replace the O-ring. Home Depot, etc. carry various O-ring sizes but if you're really in a bind and can't find the right size, get one that's too big, cut it size and butt-end the cut ends together and glue together with superglue or frag glue. Should do the trick...

[The Guy]

Originally Posted by Delphinus

Could be as simple as a grain of sand on the O-ring .. doesn't take much. Check for nicks or abrasions too. Worst case scenario, you can replace the O-ring. Home Depot, etc. carry various O-ring sizes but if you're really in a bind and can't find the right size, get one that's too big, cut it size and butt-end the cut ends together and glue together with superglue or frag glue. Should do the trick...

Lordco sells O-rings all sizes and cheap,also the O-ring may look ok as mentioned but for the cost replace it. Don't over tighten.

[aquatechy]

Thanks for the input guys. Im going out on a o-ring hunt this afternoon, i'll post the status soon

[11purewater]

Lubricate the 'o' ring with K-y.(not kidding,I use this trick when I'm building Hemo Dialysis systems, non toxic and water soluable.)This should also be done when installing an ro membrane for a better brine seal.