My cold water supply line (braided steel) on my kitchen sink seemed to be leaking at the (1/2") connection. I replaced the line with a similar braided unit. I tightened it hand tight, then a half turn with wrench. It was till leaking so I tightened it more. I also tried removing and reattaching it (extra snug) and it's still leaking.
I'm really baffled on this one. I noticed the male threads are not completely in the round (they have flat sides), but there is nothing unique about the supply line that was removed. No sign of teflon tape, and I didn't use any.
In the picture, you'll note the new line (cold supply) is on the left with a drip at the connection. The hot water line is in the middle (you can see flat sides) and the wand lines are also visible.
Also, can someone please advise as to how to disconnect the black plastic connection that connects the wand to the faucet (in foreground on right in picture)? Thanks!