V700 and early Ambassador 20mm clutch outer body plunger oring

V700 and early Ambassador 20mm clutch outer body plunger oring. This is the oring that seals the early smaller (20mm) clutch push rod actuator (plunger or clutch outer body) to the rear transmission cover. Also used on the primary shaft of the Nuovo Falcone, and on Benelli 900 Sei.