Just a note,

Oceanic's new HP spools are tapered or bullet shaped on both ends making 
it quite easy to install the higher durometer o-rings. Scubapro sells the 
polyurethane o-rings for their spools which are tough, but still a little 
soft (part #01-050-109). I'm in agreement with Scott that the Viton 90s 
provide good service up to 4,000 psi.

Chuck Noe

G. Irvine wrote:
> 
> Scott, this is exactly the problem I have had with all viton rings. Try
> putting one of these on a hose insert, for example. The other probelm is
> taking a set , as in the orifice of a second stage. I just use the bunas
> and the p guage are the only ones that end up mushing, but that takes a
> long time. I have not had one go on my regular gear in a year. My
> saltwater ones go on a regular basis, and there I am only using 35%
> oxygen.
> 
>  Bott is sending me a couple of his to try out. I would love to
> eliminated the mushing on the p guage, but I am not talking oxygen regs,
> I am talking my main regs which never see more than 14% oxygen.
> 
> J. Scott Landon (409) 886-9587 wrote:
> >
> > i have teh 90 durometer o-rings for the high pressure spool
> > piece.  they are size 003.  mine are viton.  once you can get the
> > little buggers on, you are set to go without any of the
> > deformation you see with 70-75 durometer (standard) o-rings.  i
> > probably rip 4 in half for every one i can get on.  major
> > headache to get on.
> >
> > scott
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