Diana Chaser .177 barrel end O-ring size is inside

so we were chewing on the size of the .177  barrel end O-ring and it is a 4.7mm x 1.42mm a odd ball for sure

I ordered 100 of them from the UK on a hunch that was the size and on checking them side by side that was it

they were around 0.12 each after the shipping so that is it   here is the  site they are great to deal with

http://www.exactrubber.co.uk/

in reality if something else works go for it, I would think when PA every gets there parts they will be a buck or two plus shipping

so it just some info and by the way a 009 works in the .22 barrel

that's all I got

mike