Expansion Spring Ring 14mm

The 14 mm expansion spring ring is an elastic component used in a high-pressure pump assembly during service and refurbishment work. It supports correct seating and cooperation of parts in the pump section, so its condition matters during pressure washer repairs.

MPN / reference: 43.091
Dimensions / size: 17×3×17 mm
Weight: 0.001 kg

APPLICATION

Ring used in pump service work for pressure washers, including:

• refurbishing the pump section after disassembly (replacing spring/expanding elements),
• pump-system repairs where correct preload and part positioning must be maintained,
• replacing a worn ring during overhauls of older units,
• service during washer repairs where mounting parts operate under load cycles.

SYMPTOMS - WHEN IT’S WORTH REPLACING

Typical symptoms of wear or damage:

• cracks, deformation, or wear marks visible after disassembly,
• loss of spring force (ring does not return to shape after unloading),
• difficulty achieving correct fitment in the pump section during assembly,
• unusual friction/rubbing caused by improper part seating,
• recurring issues after repair if a worn ring was left in place.

HOW TO CHOOSE THE RIGHT PART

Select based on manufacturer data and dimensions, as similar rings may differ in parameters:

• by MPN / reference: 43.091,
• by dimensions: 17×3×17 mm,
• by comparison with the removed part: check diameters, thickness, and spring condition.

Accurate fit is critical because it affects assembly and the operation of cooperating pump components.

COMPATIBILITY

Ring described as intended for service use in Kränzle K 1150 and K 1151 units.
For safe selection, confirm compatibility by MPN 43.091 and 17×3×17 mm dimensions in the pump documentation/parts table.

[faq]

Does this 14 mm ring fit every Kränzle K-series washer?|No. Fit is determined by the part number and dimensions. The safest approach is selecting by MPN 43.091 and comparing with the removed part.
What is the expansion ring used for in the pump assembly?|It’s an elastic element that helps maintain correct seating and preload of parts in the pump section. It supports proper assembly and stable system operation.
Can an aftermarket expansion ring be used?|Yes, but only if dimensions and spring characteristics match exactly. Incorrect selection can complicate assembly or affect pump operation, so the MPN and documentation data should be the reference point.

[/faq]