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To: Barry
To: Hallett <bazza@sy*.DI*.oz*.au*>
To: techdiver@opal.com
Subject: Re: O Rings and using O2 mix
From: "Terry McCracken" <terrym@it*.ns*.co*.au*>
Date: Tue, 28 Feb 1995 09:22:01 -0500
On Feb 27,  9:16pm, Barry Hallett wrote:
> Subject: O Rings and using O2 mix
> Hi world
>
> I have a question that I am sure someone out there can answer for me.
> We have all been told to use special "O" rings when using O2 in mixes
>greater than 22% or 40% depending on which training body you adhere to ...
>true/false?
>
> My question is why?    I havenot been able to find any concrete reason for
>such story put about by the Vitron manufactures?

	I belive that you can use normal O rings but that they will
detererate
faster when used in a high O2 environment. This means more regular serviceing
or a greater chance of an O ring failure.
	Yes, O2 is used in a lot of places where there is oil around, but
they also have acedents in these places, so why take the risk?

					Later
						Terry


-- 
Life`s ABYSS, then you dive

********************************************************************
 Terry McCracken		 GEC ALSTHOM Information Technology 
 Software Support Engineer       Ph:  61 2 415 0509 
 terrym@ns*.co*.au* 		 Fax: 61 2 417 8635 

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