I upgraded the gas line on my gas dryer and added a new built in gas valve. I was able to use this gas connector and special gas conduit tape for all my connectors and steps. This worked great, just remember to wrap the tape in the same direction as the protectors and use a few turns instead of just one. Other than that, I couldn't find any leaks with soapy water and light and my video zoom phone. Same results, no leaks, close up with just my eyes and good lighting, with soapy water to check for bubbles. highlighted.