Walther CP3 - problem with co2

[Bjacobs571]

it is all very well to say go to a o ring stockist but what size are the correct ones. Size is perhaps the most important thing

[nige346]

These are the sizes you'll need

Valve seal 6.0 x 2 xxxx OPN 2490021
Bolt 4.0 x 1 OPN 2472309
Barrel seals 9.0 x 1.5 OPN 2472295
Cylinder Seal 14.0 x 3 xxxx OPN 2459817
Cylinder fitting 15.0 x 2 OPN 2476266

OPN = Original part number
xxxx = These must be Polyurethane as in constant CO2 contact

[Bjacobs571]

These are the sizes you'll need

Valve seal 6.0 x 2 xxxx OPN 2490021
Bolt 4.0 x 1 OPN 2472309
Barrel seals 9.0 x 1.5 OPN 2472295
Cylinder Seal 14.0 x 3 xxxx OPN 2459817
Cylinder fitting 15.0 x 2 OPN 2476266

OPN = Original part number
xxxx = These must be Polyurethane as in constant CO2 contact

Many Thanks for the information. I have a couple of cylinders i need to reseal. at the moment I am using my good CP2 cylinders on all the CP series pistols they fit on.
I looked at the seal force website and they didn't seem to do any polyurethane o rings at least not on there eb-y store

[BigEars]

If the CO2 is in a liquid state it will need some head space to evaporate into to provde gas pressure. If you're over full then the head space will be insufficient for enough evaporation to take place between shots.

[nige346]

it is all very well to say go to a o ring stockist but what size are the correct ones. Size is perhaps the most important thing

My missus say's size ain't important

All sizes and part numbers added to thread

[Discocom]

Thanks again for the seal advice, will pop into Protek next time I’m down that way (any excuse!)

[vbull]

Mark, the link to the o-ring people doesn't show and polyurethene rings.