Onoto series 2000/3000 plunger

This plunger is specially designed for the '2000' & '3000'  type leakproof Onoto and has been produced using original specifications.

Due to the design of this plunger a separate backing washer is required to create a seal at the back end of the rubber washer which is supplied free

It is attached to the rod by a 5ba left hand thread and is black in colour. The main body and the end part are assembled using the same 5ba L/H thread which ensures a good seal with the rubber washer

Each plunger purchased comes complete assembled with a 7.78mm diameter rubber washer and  is held together with a 0.85mm diameter  pin