Insufficient winding of 19mm Teflon tape can lead to leaks in threaded connections. To solve this problem and ensure a proper seal, follow these steps:
Remove Existing Tape (if applicable):
If you've already applied Teflon tape but didn't wrap it sufficiently, carefully remove the existing tape from the threads. Use a utility knife or scissors to cut and peel off the old tape.
Clean and Degrease Threads:
Before applying new Teflon tape, ensure that the threads on both the pipe and the fitting are clean and free of debris. Use a wire brush or cloth to clean them thoroughly. This step is crucial for a good seal.
Cut a Sufficient Length of Teflon Tape:
Measure and cut a length of 19mm Teflon tape that is long enough to wrap the threads at least three to five times. It's better to have slightly more tape than you need than to have too little.
Apply the Teflon Tape Correctly:
Start by holding the end of the tape against the threads on the pipe, positioning it so that it wraps in the same direction as the threads. Then, wrap the tape around the threads smoothly and evenly. Ensure that each wrap overlaps the previous one by about 50%. Apply enough tension to keep the tape snug but not too tight.
Trim Excess Tape:
Once you've wrapped the threads the desired number of times, use a sharp blade or scissors to trim any excess tape neatly. Make sure there are no loose ends or overhangs.
Reassemble the Connection:
Carefully thread the fitting onto the pipe while making sure the tape stays in place. Hand-tighten the fitting as much as you can to prevent cross-threading, and then use a wrench to snugly tighten the connection. Be careful not to overtighten, as this can damage the threads.
Check for Leaks:
After assembling the connection, turn on the water or pressure source (if applicable) and check for leaks. If you see any leaks, you may need to disassemble the connection, reapply the tape, and reassemble it following the steps above.
By following these steps and ensuring that you wrap the 19mm Teflon tape around the threads correctly and with the right amount of tension, you should be able to solve the problem of insufficient winding and achieve a proper seal in your threaded connection.

