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VM Empire Where the VM-68's and PMI-3 Come out to play

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Old 07-28-2009, 05:56 AM   #1 (permalink)
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O-ring sizes

Hello everyone.
My cousin found old VM-68 somewhere and gave it to me to check it out and fix it if it doesn't operate properly. Since it has seen better days and most likely hasn't seen any kind of maintenance for years I decided i would disassemble it, check out if the parts are allright, chance the O-rings to brand new ones and lubricate it properly.
Now here's the problem: I can't find info about what sized O-rings I should get for it. I've read that there are places where you can buy the complete set of O-rings for VM-68 but the problem is I'd have to order it overseas to Finland and I'm not willing to do so right now. Local paintball stores are no help.
So, does anyone have information about the O-rings or is there a site in the internet where I can check it out?
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Old 07-28-2009, 06:38 AM   #2 (permalink)
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First of all, welcome to MCB!

These two websites have tons of information on the VM68:

Vm Empire v2.0
www.VM68.com

Palmer's has what you need, I'm sure they will ship to Finland. I know you don't want to order overseas, but this is all there is I believe.

VM68 / PMI 3 Seal Kit [SHER061] - $30.00 : Palmers Pursuit Shop!, Where Custom Still Means Something

Another person on this forum also has o-ring kits, American Paintball has them too.

Vintage Seal Kits Available

Last edited by HyePower; 07-28-2009 at 06:45 AM.
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Old 08-02-2009, 02:10 PM   #3 (permalink)
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Allright, that helps a lot. Thanks!
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Old 08-09-2009, 12:41 PM   #4 (permalink)
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Hye Power has it right.

If you can find the o-ring sizes in those linked sites similar sizes might be available in your local hardware/plumbing supply store. It would be worth a shot.
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Old 08-09-2009, 02:29 PM   #5 (permalink)
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the oring on the front of the bolt is non-standard...u wont find it at your local hardware store

save yourself the trouble and order the kit from palmers
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Old 02-14-2013, 11:24 AM   #6 (permalink)
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Riving an Old thread. Finding the right o-rings isn't the problem. Need the correct sizes to place an order.

McMaster-Carr
http://www.mcmaster.com/#o-rings/=lh4jp3
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Old 02-14-2013, 03:19 PM   #7 (permalink)
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exactly, Mcmaster Carr has any o-ring you need. Problem is no one wants to tell people what the correct sizes are......
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Old 02-14-2013, 05:39 PM   #8 (permalink)
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Hang tight, I'll dig out my calipers. Bear in mind that i can't till you what the durometer is, as I have no way to tell. Diameters will be as close as i can figure as they're a little worn.

*edit*

Barrel Oring
X-section: .097"
OD: 1.0335"
ID: .8315"
Groove seat: .902"
Body ID: .9305"

Hammer Oring
OVAL
Thickness (laying down top view): .995"
Height (laying down top view): .072"
OD: .730"
ID: .525"
Groove seat: .579"
Body ID: ~.745-.756"

Valve Oring

Since the one Oring broke while I was removing it, I can only give you the diameters from the body & groove in the valve

X-section: .0675"
OD:?
ID:?
Groove seat: .6345"
Body ID: ~.745-.756" (too deep to actually measure, estimated from valve OD)

Bolt Oring

I have an aftermarket TASO bolt, but I'll give the known measurements.

(Stock Oring from palmers)
X-section: .1015"
OD: .633"
ID: .686"
Grove seat:?
Body ID: .686"

Aftermarket TASO Bolt Oring

X-section: .102"
OD: .6455"
ID: .440"
Groove seat: .4955
Body ID: .686"

All measurements are +/- .015 since i have crappy digital calipers, and the Orings flex a bit/are a little out of round.

I hope this helps.

Last edited by Sneak; 02-14-2013 at 06:46 PM.
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Old 02-14-2013, 10:41 PM   #9 (permalink)
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Very cool. Thanks!
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Old 02-14-2013, 11:43 PM   #10 (permalink)
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Np. I just found out that you can substitute tank Orings on the valve without issues.
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