I have a 3000 psi JDS bottle tank that is leaking. I took the reg. out and the oring where it screws into the gun is deformed and creak colored. It is soft and gummy. Anybody know the size and material of that oring? Thanks.
If you are referring to the O-ring on the end of a paintball tank bonnet, a -016 or -015 is what you need. No particular preference for one size over the other...the ratio of the diameter to the cross-section is so large that either works. Buna-N or polyurethane in 70 durometer or 90 durometer, again with no compelling reason to prefer to one over the other.