[AR] Re: Explosive decompression of o-rings with helium

  • From: Doug Jones <djones@xxxxxxxx>
  • To: arocket@xxxxxxxxxxxxx
  • Date: Fri, 21 Aug 2015 09:37:04 -0700

EPDM burns merrily in N2O. The only elastomer I've found that neither swells nor burns is Kalrez.

Doug Jones

On 8/21/2015 5:44 AM, Daryle Dismukes wrote:

Recent tests show that EPDM can also work with nitrous oxide if a more
durable elastomer is required.
-Daryle

On Wed, Aug 19, 2015 at 3:56 PM, Troy Prideaux <GEORDI@xxxxxxxxxxxxxxxx
<mailto:GEORDI@xxxxxxxxxxxxxxxx>> wrote:

The only material truly compatible with Nitrous that I’m aware of is
fluorosilicone. Some sources say that **some** grades of Viton are
compatible which I trust, and some say that silicone is compatible,
but it’s also probably **some** grades also. Once again, I remind
you to read the Scaled Composites study on N2O compatibility where
they found (to quote):____

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Troy____

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