Pipe dope is liquid teflon. Teflon tape is designed as a lubricant for threads, not as a sealant. It will seal joints, but it's purpose is to lubricate the threads. I use pipedope on threads, not a lot, enough to get it covered, then 2-3 wraps of teflon. Makes threading everything on easy and why take a shortcut when you can do it once and do it right?
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