Battle Tested BT SA-17 o-ring sizes

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  • Chandlercv
    Newbie
    • Sep 2021
    • 17

    #1

    Battle Tested BT SA-17 o-ring sizes

    Description Dash size OD ID CS Hardness Material Notes
    Hammer -016 3/4 5/8 1/16 70A Urethane In player parts kit, it is blue
    Valve -016 3/4 5/8 1/16 70A Urethane
    Puncture Pin Housing -016 3/4 5/8 1/16 70A Urethane
    Feed Tube Cap -016 3/4 5/8 1/16 70A Buna
    Bolt -015 11/16 9/16 1/16 70A Urethane
    Rear Block -015 11/16 9/16 1/16 70A Buna
    Adapter Plug -015 11/16 9/16 1/16 70A Buna
    Feed Body -015 11/16 9/16 1/16 70A Buna
    Barrel 3/4 11/16 1/32 70A Buna
    Seal Housing Inner -014 5/8 1/2 1/16 70A Urethane
    CO2 Puncture Seal 13/32 5/32 1/8 Square profile, suspect it is urethane
    Last edited by Chandlercv; 12-17-2021, 12:48 AM.
  • XEMON
    Frenchy is here!
    • Jul 2020
    • 3029
    • Nor Cal

    #2
    Here is the pierce pin assembly:
    Click image for larger versionName:	BT-SA17 - Pierce assembly.pngViews:	0Size:	1.31 MBID:	208430

    Don't remember who was looking for it, but here are the dimensions of the 12g seal:
    Click image for larger version

Name:	BT SA-17 - 12g seal - drawing.JPG
Views:	657
Size:	67.4 KB
ID:	208432
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    • Chandlercv
      Newbie
      • Sep 2021
      • 17

      #3
      After a lot of experimentation with puncture sea replacements, I can report the following:

      - 3d printing seals to Xemon's specification using CraftCloud's Elastic Resin (https://craftcloud3d.com/material-guide). This material immediately blows out.

      - Using a -201 o-ring without the smaller retaining ring seems to work well enough. It survived two CO2 changes in garage testing.

      Next up, field testing. If anybody can report back any experiences with alternatives before I do, that would be appreciated.

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