Originally Posted by
Rich
Trust me JB, having seen plenty of synthetic washers I don't think it will be.
Rich
In that case Rich, will email you - thanks 
Caisterboy, the current arrangent is an o-ring. I want to ditch it and replace it with a "parachute" type washer, as these are more efficient and seal better. The crap sealing of the o-ring design is why BSA need to have a "buffer washer" bedind the piston head, to soak up the impact of the piston slamming into the end of the cylinder 
Cheers,
JB
Always looking for any cheap, interesting, knackered "project" guns. Thanks, JB.
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