Leak can be seen between the male and female thread
Leak from an unusual spot?
+12
I even tried plumbers tape. This is a brand new hose. I even tried swapping out the O ring with another new one. I under AND over tightened to try for a good fit. I'm almost pulling my hair out over this!
try using more plumbers tape make it thicker
Since you mentioned your home is brand new, you should have some sort of warranty on it. Have you contacted the builder?
Is the male part damaged at all?
Hi John, I attached a link that should hopefully help you out
https://www.bluefrogplumbing.com/about-us/blog/2016/11/how-do-i-stop-my-plumbing-joints-from-leaking/
Female part of the hose should have a rubber washer. Maybe this is what you mean by O ring. Normally O rings go over a male fitting or shaft. Washers go between male and female parts of a hose connection. Washer is 1st line against leaks and teflon tape is final line of defense. I hope you didn't misshapen the hose connection by applying too much pressure with pliers and distorting it.
John,
Have you tried switching the hoses temporarily to see what happens? I would also test a new hose to narrow down where the issue is.
Is the washer you used flat. Like a washer for a garden hose. Over tightening can distort the connector. Sometimes it's a manufacturers defect. Switch the hoses like Seth suggests. You may need to return the hose for a replacement.
Wrap it the correct direction, never more than two 'laps' and always start two threads back.
seal is worn out