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O-Rings
- Thread starter Fred J
- Start date
D
DonMatzeder
Guest
CO2 o rings are high Duranamer (hard) o rings because the gas will impregnate soft o rings and blow them up when the presure comes off them. They are cheap...call Mac 1 and tell him what you need and he will fix you up with the best available.
M
mod70
Guest
Who is Mac 1?
D
DonMatzeder
Guest
http://www.mac1airgun.com/
Ask for Tim McMurry
Ask for Tim McMurry
A
Alaninga
Guest
O ring material...
Another characteristic of O ring is the material they are made out of. I purchased Urethane O rings when rebuilding CO2 airguns. Urethane does not absorb CO2 nearly as much as Nitril, Vitron or Buena [sp?]rubber O rings. The downside is Urethane is a material that decays in the presence of Ozone and LIGHT. Early CO2 rifles and pistols came with TWO O rings. When changing powerlets you just removed the O ring and let it 'decompress' - it looks like an earthworm on a hot sidewalk for a few minutes as it gets 'the BENDS' and the CO2 that it had absorbed under pressure is now expanding out in bubbles. It will be back to normal in 15 minutes or so. The 'second' O ring is what the airgun owner was supposed to use for quick reloading of the CO2 powerlet. The Durometer or hardness is another physical characteristic of any O ring that helps it keep from absorbing CO2 when under pressure. The harder the O ring [durometer rating] the less it tended to absorb CO2 gas. Hard, or 'high durometer' O rings can be hard to fit over into the O ring groove on the guns' end tube cap. Benjamin used to make a tapered plug that allowed one to install an O ring easily. You roll an O ring onto the small end. Then you put it next to the tube cap and rolled the O ring onto the cap and over into the O ring groove. It can be made today easily out of hardwood. This 'O ring plug/installation tool' can be seen on the back of some OLD Benjamin Air Gun owner's manuals.
Just a few thoughts.
Another characteristic of O ring is the material they are made out of. I purchased Urethane O rings when rebuilding CO2 airguns. Urethane does not absorb CO2 nearly as much as Nitril, Vitron or Buena [sp?]rubber O rings. The downside is Urethane is a material that decays in the presence of Ozone and LIGHT. Early CO2 rifles and pistols came with TWO O rings. When changing powerlets you just removed the O ring and let it 'decompress' - it looks like an earthworm on a hot sidewalk for a few minutes as it gets 'the BENDS' and the CO2 that it had absorbed under pressure is now expanding out in bubbles. It will be back to normal in 15 minutes or so. The 'second' O ring is what the airgun owner was supposed to use for quick reloading of the CO2 powerlet. The Durometer or hardness is another physical characteristic of any O ring that helps it keep from absorbing CO2 when under pressure. The harder the O ring [durometer rating] the less it tended to absorb CO2 gas. Hard, or 'high durometer' O rings can be hard to fit over into the O ring groove on the guns' end tube cap. Benjamin used to make a tapered plug that allowed one to install an O ring easily. You roll an O ring onto the small end. Then you put it next to the tube cap and rolled the O ring onto the cap and over into the O ring groove. It can be made today easily out of hardwood. This 'O ring plug/installation tool' can be seen on the back of some OLD Benjamin Air Gun owner's manuals.
Just a few thoughts.
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