I spoke with my teammate about this o-ring. He didn't have a part number ,we took it out of an a/c kit here at work (Honda Dealership). He has since however bought others at a Automotive Parts store. He just took the o-ring in with him and asked for a matching o-ring from automotive a/c systems. He also mentioned it was a green o-ring.
Wish i had more info what/where to get these o-rings cause I have seen how annoying they can be but thats all the info we both have.
South Island Rangers Airsoft Club- President
Victoria Area Age Verifier