Metal Valve Stem Caps With Rubber "O" Ring
Seems that the rubber "O" ring seal on the inside of metal valve stem caps are getting inside of my valve stems. They end up in the inside the stem wall and around the out side of the stem needle valv...
Forum Discussion
The o rings are also there to stop minor air seepage from around the valve core from escaping. I agree with grumpy that most likely they are over tight. Since the valve inside stops nearly all the air there is not any real pressure on the cap. A mild snug fit is all that is needed.
