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To: techdiver@opal.com
Subject: Re: O2 kits for poseidons
From: mdufour@CA*.OR* (Marc Dufour)
Date: Fri, 10 Mar 1995 00:22:37 -0500
   Hi guys.

   Here is my first post here, for a quick question. But fist, okay, I'm a 
newbie and have only been certified for 8 months, and only have 33 dives so 
far. But I'm fairly sure that I'll carryon diving (can't stand being dry for 
more than 1 week), and will go deeper into it one day... 

   So, I read this, about O2 cleansing regs:

>I just got off the phone with Parkway, and they will be bringing
>in a "new, improved" kit for the Poseidon 1st stages.  This will
>include viton orings and a new, "clear" diaphragm.

   And I'm led to wonder:

   When one "cleans" a regulator for O2 service, understandably it involves 
replacing all parts who'd react with oxygen (the Apollo I fire is well 
burned into my memory). So it comes without surprise that gaskets and 
O-rings have to be replaced.

   However, when you replace a rubber O-ring with an oxygen safe O-ring, how 
do you know it has been replaced? I mean, is the "viton" (if I'm not 
mistaken) easily distinguished from the (synthetic?) rubber O-rings it 
replaces (I mean, does it have a different colour - I suppose that the 
elasticity HAS to be substantially the same so the performance would not be 
affected), or you have to use an elaborate check-list procedure?
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