Reg Hose at Second Stage - Viton

Reg Hose @ Second Stage O-Rings –Viton Valve Stem O-ring (6 to a pack)   This is the o-ring that is used in the hose where it attaches to the second stage.  This is another o-ring that is a good idea to put a little extra lubricant on. This is also the same o-ring used on valve stems.