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Occasionally I have a problem where I'm on the loosing end of stopping a small drip leak on my threaded connections, be it copper or CPVC. I'm on that loosing end again right now.
I have a 1/2" CPVC female threaded connector into which I am threading a chrome 6" 1/2" pipe onto which will be a 1/4 turn shutoff valve. This is for a sink. I originally used teflon tape, 4 wraps at least. When I left there were no leaks. HO calls and says it's got a "pinhole" leak at the threaded joint where the chrome meets the CPVC fitting. I went back and undid the joint and used pipe dope instead which almost always works every time, just messier than teflon tape. Same problem, pinhole leak. I cranked more and the leak only slowed, like every 5 minutes a drip. I can't turn it anymore, it's already that tight.
Andy ideas/advice on how to stop it? I wrapped with teflon and then doped it, so I got two sealing methods. So far no leak that I could see, but....What works best for you all to ensure no leaks and if you get one what is your remedy?