These have been posted before, though incomplete and not stickied. They're also on MCB. But people on AO ask for them from time to time, so I thought I'd repost the information in hopes that it can remain easily accessible. If I'm missing something or have something wrong, let me know and I'll update this original post.
O-ring Size Chart
* All o-rings are 90D urethane unless specified *
Originally posted by sunshaker:
Classic Valve (for Automag 68 and Mini-Mag; 1 rebuild)
4 Power Tube O-rings 010
4 Teflon O-rings 006 (PTFE)
2 Barrel O-rings 018
2 Reg. Piston O-rings 012
1 Reg. Body O-ring 116
RT Classic (1 rebuild)
3 Field Strip Banjo O-rings 009
3 Barrel O-rings 018
2 Power Tube O-rings 010
1 Reg. Piston O-ring 012
2 Reg. Seat O-rings 008
1 Reg. Body O-ring 018
2 RT On/Off Small O-rings 004
4 RT Reg. Valve Pin O-rings 006
Level 10 Bolt (1 install)
2 Carrier O-rings 008
1 Power Tube Tip O-ring M1.78X7.94?!? (I need to confirm this. Is this the same Size as would be found on other mag valve tips? I had a dead one in an old Mini-mag that I couldn't figure out the size for, but I replaced the Level 7 with a Level 10 and didn't need it anymore.)
Originally posted by Justus:
X-Valve (for RT-Pro, RT Custom, Emag, and Xmag; 1 rebuild)
2 Power Tube (on/off bottom) O-rings - 010
1 Reg. Piston O-ring - 012
3 Reg. Seat O-rings - 008
1 Reg. Body O-ring - 017
2 RT On/Off Small O-rings - 004
4 Reg. Valve Pin O-rings - 006
5 L10 Carrier o-ring - 008
Additional information:
Emag Quad O-ring - 006 (0.070" width, Buna-N; cross section looks like an "x")
ULT Outer (large) O-rings, top and bottom - 010
ULT Top (small) O-ring - 006 (fits around the ULT pin coming out the top)
ULT Inside (tiny) O-ring - off the charts small (Buna-N; sold by AGD or Tuna)
L10 Powertube Shims - .010" thickness, otherwise same dimension as ULT shims
ULT Shims - .005" thickness, otherwise same dimension as L10 shims
X-valve Red Powertube O-ring - 1mm X 20mm (Buna-N 70D; not exact, but a suitable replacement as confirmed by hill160881)