Pipe thread tape, also known as PTFE or Teflon tape, must always be applied in a clockwise direction around the male threads of a pipe fitting. Holding the pipe facing toward you, wrapping clockwise ensures that the tape tightens and molds smoothly into the thread grooves when you screw the fitting into a female connector. If you wrap the tape counterclockwise, the friction of screwing the pieces together will catch the loose end, causing the tape to unravell, bunch up, and strip away as you tighten the joint. Following this correct directional rule is essential for creating a secure, uniform, and completely leak-free plumbing connection.
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