CEJN To 3/8 O-ring

CEJN to 3/8 O-ring

  This adapter uses a CEJN Male Nipple and a 3/8 O-ring male.  The 3/8 O-ring male is the same size as a standard low pressure hose.  Many of the rebreather adapters use this thread pitch.  The easiest way to check if your is 3/8 male is try screwing any low pressure reg or BC hoses into the port you want to adapt if it goes in you know this adapter will work.