DayState O-rings - A Reference for Owners

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travels4fun

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Mar 28, 2015
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Arizona, United States
 DayState O-rings – A Reference for OwnersRevised May 6, 2015

This list will be updated as best as possible. If anyone wants would like to add info or observes an error, please reply to this post.
Please note that DayState uses both Imperial or Metric O-rings. For Imperial O-rings, either the British Standard dash number (BS-xxxx) or American Standard dash number (AS568-xxxx) will work.

Air Wolf O-ring Kit:
  • Metric 25mm x 1.5mm Buna-N A70 (Magazine)
  • BS-003 Buna-N A90 (Bolt Probe .177)
  • BS-004 Buna-N A90 (Bolt Probe .22)
  • BS-008 Buna-N A70 (Transfer Port Bush)
  • BS-111 Urethane A90 (Piston)
  • BS-112 Buna-N A70 (Harper Valve)
  • BS-113 Buna-N A70 (Dust Cover)
  • BS-118 Buna-N A70 (Solenoid Spacer)
  • BS-617 Buna-N A70 (Aluminum Bottle)
INDIVIDUAL SEALS AND O-RINGS:

Magazine O-ring (All Calibers)
  • 25mm x 1.5mm Buna-N A70
Bolt O-rings (aka Pellet Probe): Air Ranger, Air Wolf, MK4, Huntsman, Regal - FAC
  • .177: -003 Buna-N A90
  • .20: -004 Buna-N A90
  • .22: -004 Buna-N A90
  • .25: -005 Buna-N A90
Bolt O-rings (aka Pellet Probe): Air Ranger, Air Wolf, MK4, Huntsman, Regal - 12 ft/lbs
  • .177: -003 Buna-N A70
  • .20: -004 Buna-N A70
  • .22: -004 Buna-N A70
  • .25: -005 Buna-N A70
Bolt O-ring: Wolverine 303, B, C, HP (located just inside the barrel not on the actual probe)
  • .22: 5mm x 1.5mm Buna-N A70
  • .303 <Unknown>
Transfer Port Bush O-rings:
  • -008 Buna-N A70 (AR, AW, MK4, HM)
  • 5mm x 1.5mm Buna-N A70 (AR80)
Harper Valve O-rings:
  • -112 Buna-N A70 (AW, MK4)
  • -BS616 Buna-N A70 (AR, HM, RGL)
Dust Cover O-rings:
  • -113 Buna-N A70 (AR, AW, HM, RGL)
  • BS810 Buna-N A70 (MK4)
Front Valve Body O-rings: (AR, AW, MK4, HM, RGL)
  • -117 Buna-N A70
Solenoid Spacer O-rings: (AR, AW, MK4, HM, RGL) 
  • -118 Buna-N A70
Shroud O-ring: MK4
  • 14.5mmx1.5mm Buna-N A70
Aluminum Bottle O-ring: (AR, AW)
  • BS617 Buna-N A70
Striker Valve Retainer O-rings: (AR, AW, MK4, HM, RGL)
  • -006 Buna-N A70
FAC Valve Stem O-rings: (AR, AW, MK4, HM, RGL)
  • -007 Buna-N A70
Regulator O-rings:
  • -009 Buna-N A70 (AR, AW, MK4, HM, RGL)
  • -012 Buna-N A70 (MK3)
Foster Fill Coupler O-ring: (AR, AW, MK4, HM, RGL)
  • -010 Buna-N A70
Piston O-rings: (AR, AW, MK4, HM RGL)
  • -006 Urethane A90
 
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Reactions: orangeokie, Stone02, mmahoney and 2 others
I will add this. Last year I decided to replace the bolt probe ring on my Daystate CR-Xst in .177 caliber. I was told by multiple sources on multiple forums, including the Daystate Owners Forum I needed an 003. I was told that all Daystate 177's were 003 and all 22's were 004. This was also confirmed by AOA, Mac1, etc. Well long story short after receiving 3 different orders of 003 o-rings from 3 different sources none worked. I just happen to have a 177 that uses a 004 o-ring. I finally gave up and took the o-ring to a place that sells a lot of o-rings and matched it up.
 
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"travels4fun"
"Keith2324"What is a good "local" store to find some of these o-rings? I need one 004 for the Air Wolf .22 bolt probe.

Thanks,

Keith.
Click to expand...
I buy all of my o-rings from McMaster-Carr. A pack of 100 Buna-N 004 Durometer 90 rings costs $2.27. Here is the link: http://www.mcmaster.com/#5308t113/=xxwuru
Click to expand...
Thanks for the link. I was just hoping to find something like Lowes or Home Depot because I only need one. But I'll order some and if anyone lives in the Tampa area, you are more than welcome to have a few as I will have plenty to share.

Keith.
 
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