salamander requires no jointing compound??

[Surfjayce]

Ok so between the water tanks (hot and cold) and the pump itself there are quite a few compression fittings including a new cold water connector and the surrey flange. first of all i should say that non of this is fitted yet and the pump is a CT50

the fitting instructions say that no jointing compound is to be used (this is in red so I assume its warranty vital) so my question is, are compression fittings perfectly sound with no jointing compounds at all?

cheers guys

 

[HoodedClaw]

They are if threaded right and the olives are good. I don't use the stuff, but do use ptfe/lockite55 if having to reuse nut/thread.