What size o-ring on Viewloader hammers?

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  • Morgenstern
    Bunker Buster
    • Jan 2021
    • 173

    #1

    What size o-ring on Viewloader hammers?

    You know the pesky ones on like Orions or Triads? I swear I’ve seen some that use bottle o-rings but most are a size or two under that and I need a few of them for my loaner fleet. Thank you!
  • glaman5266
    MCB Life Member
    • Jul 2020
    • 1277
    • WI

    #2
    For reference, a standard bottle o-ring is 015. Maybe try one size smaller?

    I had some Orions years ago & always used urethane tank o-rings. Not sure what the actual size is supposed to be though.
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    • William the Third
      I do cocaine!
      • Jul 2020
      • 1099
      • WNC

      #3
      If it has a fat striker, it will probably be a 016 o-ring. If it has a slim striker, it will probably be a 015 (co2/hpa tank) o-ring. Seems like the Orions or Triads I recall working on used 015 o-rings throughout.
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      • Morgenstern
        Bunker Buster
        • Jan 2021
        • 173

        #4
        They use slim strikers and the 015 is too big for most of them though occasionally you can get away with it tolerance-wise and the newer BE/JT ones fixed this problem by using an 015. The o-rings I’ve taken off are definitely smaller (and turning to mush) and the 015 causes too much drag. Just checking if anyone knew what it was for sure so I could order them in bulk

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