Repair Kit - Kränzle Pump Seals

Kränzle 18 mm pump seal repair kit is a seal package intended for refurbishing the pump section in high-pressure pumps used across many Kränzle units (including 2000, Profi, Quadro, THERM series). The kit is typically used when worn seals cause leaks, pulsation, or reduced pressure performance.

MPN / reference: 410491
Weight: 0.060 kg
Dimensions / size (packaging): 10×1×10

APPLICATION

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

• refurbishing the pump sealing section (replacing parts in the head/working section),
• eliminating pump-area leaks affecting working pressure,
• periodic inspections of heavily used units (long duty cycles, continuous operation),
• pump overhauls in older machines where replacing the full seal set is a standard repair step.

SYMPTOMS - WHEN IT’S WORTH REPLACING

Typical signs of pump seal wear:

• water leaks around the pump, head, or under the housing,
• drop in working pressure despite functional accessories (nozzle/gun),
• jet pulsation and pressure fluctuations during operation,
• difficulty maintaining stable parameters under load,
• moisture marks after downtime (a leak appears “after a while”).

HOW TO CHOOSE THE RIGHT PART

Correct kit selection is critical - kits for different pump versions may look similar but differ in details:

• by manufacturer MPN / reference: 410491,
• by size (18 mm): according to the specific pump requirements and kit specification,
• by comparing with the removed set: match the parts and confirm profiles/dimensions before installation.

If the unit has been repaired before, verification by MPN and documentation is especially important.

COMPATIBILITY

This kit is described as intended for Kränzle 18 mm pumps used in the following families: 2000 series, Profi series, Quadro series, THERM series. In service practice, it may also appear in the context of older models (e.g., 115, 125, 130, 135, 145T, 150, 155), however final fitment must be confirmed by MPN 410491 and the pump’s technical data (table/specification/parts list).
Selecting only by series name or production year without reference verification is not recommended.

[faq]

Does kit 410491 fit all Profi/Quadro/THERM units?|Not always. Each series includes multiple pump versions. The safest method is selecting by MPN 410491 and confirming the pump is in the 18 mm configuration.
Does a pressure drop always mean the pump seals must be replaced?|No. Similar symptoms can be caused by the nozzle, valves, air ingress, or the water filter. However, if you see leaks around the pump or recurring pressure fluctuations despite functional accessories, seals are a common diagnostic point.
Can I use an aftermarket seal package instead of the original kit?|Only if dimensions and profiles match exactly and it is 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]