I've had my Jay Feather X213 about two years now. After each use, I always drain the water heater by removing the plastic drain plug. On my last trip, I noticed a small drip from the drain plug. I've never used tape on the threads. Should I be? Or maybe it is time for a new plug?
It is pipe threads, so you should use a bit of teflon tape. That nylon is fairly soft, so I bet it will conform to the metal threads nicely. Mine gave me a lot of grief after just a few of removing it, so installed a short hose and 1/4 turn valve. But if you have had good luck with your nylon plug, I might recommend buying two replacements.
The nylon drain plug is a tape-free plug. They tend to wear out when removed over and over. Mine is not leaking yet but will. I remove it often like you and many others here. You can try the white Teflon tape (the yellow tape is for gas lines) to buy some time but grab a new one at the hardware store for a couple bucks and keep it handy. That's what I did.
SW Lower Michigan
2012 Toyota Tundra Crewmax TRD 4x4
I don't use tape on my plastic plugs and never had a leak. They come in a 2 pack on Amazon and I keep spares handy and I replaced it this spring only because it looked dirty and the new ones were nice and clean. Lol
I would recommend just replacing it and carrying a spare. I remove our plug and keep it removed for at least the trip home. The amount of water that comes out of the water heater after we start moving is pretty significant. I'd rather be able to drain most of the water.