Apply pipe tape (also known as Teflon tape or plumber's tape) to threads by wrapping it in the correct direction a few times.
Here's a more detailed explanation:
- Clean the Threads: Ensure the threads are clean and free of debris.
- Determine the Direction: Hold the fitting in your hand as if you were going to screw it into another fitting. Determine which direction the threads tighten. This is crucial.
- Wrap in the Opposite Direction: Begin wrapping the tape in the opposite direction of how the fitting will tighten. This ensures the tape will tighten with the fitting, not unravel.
- Apply Tension: Keep the tape taut as you wrap, stretching it slightly. This helps it conform to the threads and create a tighter seal.
- Overlap: Overlap each layer of tape by about half its width.
- Layers: Apply 2-3 layers of tape. More isn't always better; too much can make it difficult to start the fitting.
- Smooth it Down: After wrapping, press the tape firmly into the threads to help it adhere.
Why is the direction so important?
As demonstrated in the reference, wrapping the tape in the wrong direction causes it to unravel when the fitting is tightened. This defeats the purpose of the tape and can lead to leaks.