Plumbing connections

[Hev]

We have a 29BHHL Heritage Glen Hyper-Lite, 2017. Have had a ton of issues with it (too many to list) and, of course, is now out of warranty. Anyway, we found a leak in the plumbing connections for the outside kitchen. Obviously poor workmanship as all the brackets were the wrong size for the pipes and everything moved when you pulled out the kitchen. We are replacing the connections (they all leak) and there appears to be some kind of sealant applied to the joints (pipe dope?). Dealer was no help as to what this was, and another RV repair place said that the connectors shouldn’t have or need sealant as the joints are normally real tight. Our question is, is this just regular plumbers sealant? Do we need it? When we repair the leaks, we are gonna to fasten the joints in such a way that they do not move as we pull the kitchen in and out - only the flexible pipe does. Scares me to think about what other plumbing on the trailer was put together like this! With the sealed underbody, it would be impossible to check the tank plumbing without pulling that down. Also, while looking at this leak we noticed that the other plumbing lines with similar joints for the bathroom are simply laying over electrical wiring. Hope we don’t get a leak there! Thanks in advance

[chaps2018]

I have only seen compression fittings that do not need sealant but yours may be different. A pic would help the members give you an accurate assessment.

[Hev]

[Hev]

Do these help?

[chaps2018]

That is the HepvO trap. Should be able to remove and replace it without sealant. It acts like a P-trap for limited vertical height environments. If you unscrew it water will start draining so be prepared. Mine was also loose from the factory and dripped. U should be able to hand tighten to prevent leaks. Google HepvO if more info is needed.