Originally Posted by daiboy
was your cylinder a quick fill system that remained on the rifle while filling it.
Can not find the O ring on the web, any idea as to the actual size.
7x2 like lee67 said
ive got one if you struggle
might be worth checking the condition of the little pip on the reg that fits into the seal, look for scratches , ridges and sharp edges.
be careful if you lubricate the seal, certain materials dont like some greases etc
careful not to scratch the seating area in the air tube while youre digging the old one out