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> > As far as regulators go I have never and will never worry about O2
> > cleaning my regs, even the ones I use on my O2 bottle.  While there
> > are certainly some issues that must be addressed with tanks and
> > O2, I have never heard of one single issue revolving around the
> > use of non-O2 cleaned regulators on EAN or O2 bottles.
> >
> > In fact, I'll ask the general question - has ANYONE ever heard of
> > a problem using a NON O2 cleaned regulator with ANY grade of EAN
> > or Pure O2?
>
> Hi, Carl!  I've never encountered a problem myself, but a very close mate
> has - twice!
> In both instances the first-stage had nitrile 'o' rings fitted rather than
> viton 'o'rings,   (nitrile 'o' rings often have very slight traces of oil
> present.), and when the cylinders were cracked open, (apparently quickly!
> Not - as you've already said - slowly),  the 'o' rings ignited and burned
> out!
>
> Another problem with nitrile 'o'rings is that high partial pressures of O2
> can cause brittling!
>
> Strike
 
Hi Strike!
 
What gas are we talking about here - EANx or pure O2?  And, just why
was he using nitrile o rings?  Think you can get him to repeat the
test and crack it open slowly :^) :^) :^)
 
Carl