Hi all

I put a new CO2 cartridge in my little-used TFW and all the gas vented out through the top of the magazine in a matter of seconds. So I removed the valve assembly from the magazine (the first time I have done so) and found the white tapered plastic part seals against a thin o-ring that has a metal ring that sits outside it.

The o-ring appears to be rather deformed - does anyone know the correct dimensions and where to source a replacement, please? It looks like it might be square section, less than 1mm thick and about 8mm diameter, but as it's deformed it's a bit difficult to tell.

Thanks

Mycroft