I am trying to replace the leaky water line to my evaporative cooler. I made an adapter to go from the male end of a water hose to the 1/4" copper line cooler connection. This worked with no problems for the old water line for a decade or more. The adaptor is a brass round piece that screws on the hose male connection with a center threaded hole. Into the hole is a little brass adaptor from that thread/diameter to a 1/4" copper-line compression fitting. I am having water leaks at the threaded connections - hose, adapter and copper-line connector - it's hard to tell exactly where the water is coming from. I tried teflon tape - it helped a little but I still get drip, drip, drip.
Any suggestions? Some sort of anti-leak fluid that will harden and seal things? Something to put on threads in addition to or along with the teflon tape?
TIA