Step 3 · Wrap in the Correct Direction
This is the most critical step for a successful seal. Wrap the tape around the threads in a CLOCKWISE direction when viewing the fitting from the end. Wrapping clockwise ensures that as the male fitting is screwed into the female fitting (which also turns clockwise), the friction tightens the tape into the threads. If wrapped counter-clockwise, the tape will bunch up and unravel, destroying the seal. As you wrap, maintain a firm, constant tension on the tape so that it pulls tightly and conforms to the shape of every thread.