I have a Cleveland parking brake line lock on my Dragonfly. The part number
is 60-5. It has developed a leak, the fluid is coming out of the body where
the actuator arm connects.

You need three MS28775-010 orings for the shaft. There are two other orings
for fittings and poppet valves. Those are MS28775-006 and -012. The poppet
valves might fall down into the shaft cavity when the shaft is removed.

John Dupre'