Repair Kit - Kränzle Pump Seals

Kränzle 20 mm pump seal repair kit is a service set intended for refurbishing the pump section in high-pressure pumps used in selected Quadro and THERM series units. Replacing seals is a common service step when leaks, unstable pressure, or reduced HP system performance appears.

MPN / reference: 40.517
Weight: 0.060 kg
Dimensions / size (packaging): 10×1×10

APPLICATION

The kit is used in Kränzle pump service work, especially for:

• replacing seals in the piston section / pump head,
• eliminating leaks in the pump section,
• pump refurbishment after long operation or continuous-duty use,
• periodic inspections of industrial units where pressure stability is critical.

SYMPTOMS – WHEN IT’S WORTH REPLACING

Most common signs of pump seal wear:

• water leaks around the pump or under the housing,
• drop in working pressure despite a correctly selected nozzle,
• jet pulsation and pressure fluctuations during operation,
• difficulty maintaining constant parameters under load,
• moisture on pump components after downtime (leaks show up “later”).

HOW TO CHOOSE THE RIGHT PART

Correct seal kit selection directly affects pump tightness and service life:

• by manufacturer MPN / reference: 40.517,
• by size (20 mm): according to the pump’s requirements and kit specification,
• by comparison with the removed set: check part profiles and quantities before installation.

Do not select “by eye” based only on the series name - different pump variants may use different kits.

COMPATIBILITY

Kit described as intended for Kränzle 20 mm pumps used in:

• Quadro series: Quadro 1000 TST, Quadro 1200 TST
• THERM series: 895, 895-1, 1165, 1165-1

For safe selection, confirm compatibility by MPN 40.517 and the pump’s technical data (table/specification or parts list). Selecting only by model designation without reference verification is not recommended.

[faq]

Will kit 40.517 fit every Quadro or THERM pressure washer?|No. Different pump versions exist within these series. The safest method is selecting by MPN 40.517 and confirming the pump requires a 20 mm seal set.
Will replacing seals fix pressure pulsation?|Often yes, if worn seals or leakage in the pump section is the cause. Similar symptoms can also be caused by valves, the nozzle, or air ingress - diagnosing the system before replacement is recommended.
Can I use an aftermarket seal kit instead of Kränzle?|Yes, but only with full match of dimensions and profiles and if it’s rated for high-pressure systems. In practice, the safest reference is the MPN and pump specification - incorrect selection usually results in leaks and faster wear.

[/faq]