I plumbed my Vintage Air system using Aeroquip A/C lines. My #6 and #10 lines seal with no problem. The #8 coming off the high side of the compressor has been driving me crazy. I have two fittings leaking on the back side of the fitting where the hose enters (red circle). I pulled it apart and reassembled it with no luck. I had other leaks in this same section of hose. When I fixed those these popped up. I made sure to replace the o-rings when I took it apart. If I move the hose there is a small hissing noise in the circled areas.
Is there a trick to getting these fittings to seal?
