[Shop-talk] CSST gas fittings

[Mark Miller]

So I just put in some flexible gas piping with CSST fittings. One 
leaked.  I took it apart and replaced the fitting and all is OK but: the 
new fitting is a very different design from the first. First sealed the 
end of the tube to a surface on the connector, whole thing held together 
by pressure against a ring you crimp into the corrugations of the tube.  
The replacement uses an o ring to seal it all, so to the sides of the 
tube.  Which is newer? Which is preferred? Or should I avoid this kind 
of plumbing altogether?  (personally I think the o ring will give a 
better seal and isn't dependent on cutting the tube cleanly).


Thanks, o wisdom of the list!

-- 
Regards,

Mark Miller
markmiller at threeboysfarm.com