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Perry, it is bullshit. You might want to consider it ( o2 cleaning ) and
special materials for a MK16 rebreather where you Haskel 5000 psi of O2
into the unit, but the real story is that you can not have "fuel" of any
kind in any pressurized environment. A diesel engine, which has no
sparkplugs, ignites bunker oil at about 150 psi ( once the heat is built
up by the compression) in those giant tankers you see traveling the
ocean. Those engines are breathing air.

Viton is merely a better material so lasts longer than buna. So what. I
have never oxygen cleaned anything, and have no viton o-rings. I'll
throw the regulator and the tanks away before they need new o-rings
anyway.

I do use polycast rings in K style tanks valves ( for the external face
ring )and in my DIN connectors since they are harder, but that is about
it.

There is no WKPP standard for shit like this. 

Tell the gas suppliers to o2 clean the storage cylinders, and watch them
laugh in your face. They would have to do this evey time the sent one
out, right? You would have to O2 clean every reg you have and every tank
and valve you have everytime you got your tanks filled. 

This is training agency bullshit, but then I am not "certified" by any
of them anyway, and could care less what any of them think about
anything. My certification , which is self administered, is called "Real
World of Diving".

In the WKPP , if I have you doing something, that means you are
qualified to do it, and that is the only certification that means
anything to me. The rest is crap. 

Training, however is a different issue. The only guys who are qualified
to train for what we do are the guys who do it, like the GUE instructors
and the rest of us who actually do it and train the WKPP guys.

"Paranoia" is what is created by the training agencies to perpetuate
their own silliness. They have each other and the manufacturers freaked
out of their minds over "liability". I don't care, I do not have to
answer to these people.

They can oxygen clean this.

Perry Armor wrote:
> 
> George,
> 
>    I hope you'll pardon the private e-mail, but I have a question that I
> think you might be able to answer. I just got some new manifolds for some AL
> 80's, which do not have O2 compatible o-rings.  I've read some of your posts
> about "O2 cleaning", etc. from which I got the impression that you think it
> is BS.  Does that mean that you don't use Viton o-rings, either, or what?
>   I think some people are a little paranoid about this whole O2 thing, but I
> was wondering how far you guys go with cleaning & compatibiity, etc.  If you
> could give me some idea about WKPP standards, I'd appreciate it.
> 
>   Thanks,
> 
>    Perry

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