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Date: Sat, 23 Dec 95 05:32:31 PST
From: Alex Varouxis <alex1@ac*.di*.ne*>
To: <SATURN.DDRAKE05@gm*.co*>
To: techdiver@terra.net
Subject: RE: Captured O'rings

>    David B. Drake    wrote
>     The second is more serious and was told to me by a friend.  Scene:
>     cave dive in Mexico deco stop time on O2.  Open tank valve, and bits
>     of ring come out with a lot of gas.  Now picture trying to piece
>     together an o ring 'cause you need the O2 in that tank.  Everyone else
>     has DIN valves, so you can't scavenge an o ring...  What do you think
>     happened to that valve when the dive was over?  In to the jungle never
>     to be used again!  A captured o ring wouldn't fail like this and
>     wouldn't have gotten cut up in tank handling as was suspected in this
>     case.

David 

By definition both designs are captured Orings so this statement is false. If
you have a different 
definition of a "Captured Oring" please explain. O'rings are light weight,
they take up little 
space and they don't cost a lot. Why not carry spares?

Regards Alex

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