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April 20 2012 at 10:40 AM
  (Login fivestar45)
YF


Response to QB 79 valve O-Ring

the major o ring suppliers their first choice of o ring material for co2 both gas and liquid is Buna (nitrile).
The problem is most hardware stores etc. carry Chinese assorted o rings, which are junk. I've found that U.S made Mil Spec Buna is the best for co2 and it doesn't saturate, and lasts for years.

 
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  • EPDM.... - Ryan on Apr 20, 2012, 12:41 PM
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