i assembled 8 hep20 joints a few days ago for a new sink.half weeped
initially but after some tightening they are now dry.tested them with
a few atm pressure and they held.
today i realized that i should have put the o ring in first, not near
the cap. anyone made a similar mistake on their first hep20 diy job?
did it last? or did you rip out everything? why do you think they are
not leaking anymore.what is the improtance of the rubber o-ring?
The joints come preassembled. You just put insert/protector on pipe end and
insert the pipe into the joint. Why are you doing anything with the O-ring
The rubber o-ring makes the seal on the joint. It is the most important
part. Without it, the joint may as well be made with Sellotape.
* Hep20 tip: before making the joint with demountable Hep20, loosen the end
caps and tighten only slightly. Some come from the factory so tight that you
need spanners to undo them, so better to get them loose before they end up
in a barely accessible location, needing to be taken apart.
Part of me says this post is a troll, part of me says it's genuine...
The O ring is the thing that does the sealing. Without an O ring all you
have is a fitting which holds the two pipe ends in the vicinity of each
other, but provides no sealing whatsoever.
I don't understand why you disassembled the fittings in the first place
- this isn't necessary. You grab the pipe, cut it square, put an insert
in, push it into the fitting and tighten up. That's it. They *never*,
**ever** leak unless you haven't pushed the pipe home.
I think you have to remake all your fittings. They may be sealing now,
but the O ring is probably just squished far enough to seal. The
tightening isn't to seal, it's just to get the grab ring to grab.
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