Connecting flexible poly tubing?

[Svenn]

So on recommendation I used flexible braided poly tubing in the my vehicle's plumbing system, pic below. In a few spots I had to extend the tubing so I used male-male bars and screwable hose clamps.  It leaked, especially the hot water line.  I epoxied it 4 times and it still leaked.  I re-did it three times and heated up the tubing then screwed it down as hard as possible.  It still leaked.  Is this stuff not meant for RVs?  Really wish I had gone with sharkbite

[Blacktank]

is your metal male/male the right size? should be nice and tight getting on and a pain getting off

[TrainChaser]

What about using that very thin silicone tape that you use to wrap around the threads of water pipes over the connector ribs?

[Svenn]

My stupidity never ceases to amaze me... I just bought switched up to 5/8" barbs rather than 1/2" and it works fine now. To my credit, the tubing says "1/2" interior diameter" so I was following instructions

[Blacktank]

we have a different definition of stupid,returning stuff to ace hardware is fairly common to me,setting things a flame in me being stupid

glad it's fixed,water leaks are death to rigs

[TrainChaser]

Another thing to remember about plastics is that there are all different kinds, and even some sub-types within those kinds. Not all adhesives work with all kinds of plastics; the adhesives are designed for specific types. Having one kind that would work with all of them would be too simple.