Packing Seal Kit for Magnum 4000 (EK440 & 3435 Pumps)
Quick Video Overview:
See what’s in the seal kit and when you’ll need it.
Packing Seal Kit for units running EK440 or 3435 pump configurations.
These packings are normal wear items—they take the brunt of heat, pressure, and water conditions so your pump
can keep sealing and holding pressure the way it should.
When do you need this kit?
- Pressure loss or inconsistent PSI
- Pump cycling more than normal (especially with the trigger released)
- Water leaking from beneath the pump manifold
When packings start to wear down, the pump can’t maintain a tight internal seal. Replacing them helps restore proper
sealing performance, protect the plungers, and extend overall pump life.
Compatible With
- Magnum 4000 units equipped with EK440 pumps
- Magnum 4000 units equipped with 3435 pumps
or contact us with your machine’s model and serial number and we’ll confirm the match before you order.








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