You must be logged in and verified to contact the designer.
Product Description
Air Brake Gladhand as used on narrow gauge rolling stock. Use 3/8" ID flexible rubber hose. Use O-Ring (Dash 111, Buna, 50° Shore A, McMaster-Carr part number 2418T136) for sealing.
A satisfied customer commented: "The glad hands work fine. I put 65 PSI on the hose and gladhands with no problen and uncoupled them at 20 PSI and the O-ring stayed in place and didn't try to come out" (the pressure test was done, without using glue to fit the O-ring).