Step 5 · Apply Thread Seal Tape
Take your new shower arm and the roll of thread seal tape. You will apply tape to the threads on both ends of the arm. For the end that goes into the wall, start at the second thread from the end and wrap the tape tightly in a clockwise direction. This is crucial—wrapping clockwise ensures the tape tightens as you screw the arm in, rather than unraveling. Overlap the tape by about half its width and make 3 to 5 full wraps. Repeat this process for the other end of the arm where the shower head will attach.