Replacement Pump Plunger Assembly for Duraseal Pumps. If your pump is Duraseal it will have a bent wire on/off knob. Will not fiit earlier pumps.
The Plunger Assembly is the whole plunger unit including Pump Cup Washer, complete with a new one piece collar that holds it into the stove. The plungers are common to all stoves, ie a DragonFly, XGK, and WhisperLite of the same vintage take the same plunger.
Be sure to use Pump Cup Oil with this washer for an optimum seal.