Replacement Pump Plunger Assembly for Duraseal Pumps. If your pump is Duraseal it will have a bent wire on/off knob. Will not fit 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 or it will not form a good seal.
Part Number: 318638 (packaged and rather expensive), 418809 (unpackaged and much more reasonably priced!)
If your pump has failed/broken under normal use it should be replaced free of charge by
Cascade. Contact them or the shop you bought it from.