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All of the O-ring catalogs and application notes I have seen show
Viton (flourocarbon) O-rings compatable with oxygen service. Parker
recomends Neoprene. I think viton has lower permeability than
neoprene, so would be less likely to embolize. Viton is considered the
best all-round O-ring material; easy to obtain.

Are you smoking O-rings or doing something different that would make
your selection critera different? There are other materials and
configurations at a higher material and manufacturing cost. we could
spend 10 dollars or more per composite O-ring and the HP hose is still
made of rubber.

Doug

On Thu, 23 Oct 1997, Pedro Neves wrote:
]
]I heard that viton o-rings aren't suitable for O2 service. The reason for
]this is that aparently when a viton o-ring burns it releases toxic gases
](fluorine and chlorine compounds). Can anyone confirm this? And if its
]true, are there any other solutions for O2 service material?
]
]Thanks in advance.
]
]Pedro Neves

==============================================================
Doug Scott                + Engineer,  +                      
Lords Point, Connecticut  + Yachtsman, + Excrementus Cadamus  
SCOT5281@hg*.ed*          + Brewer.    +                      


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