Trying to connect plastic tubing to copper for fridge/ice maker
Got this coupling from home depot.
Put the sleeve in the plastic worked fine
But the copper tubing connection the to coupling has a tiny leak.
The coupling came with a ferrule in it, tried that first, tiny leak , 1 drop leaks down pipe per minute.
I cut the old ferrule and pipe off, and added a new ferrule.
Same thing, leaking