Pump Seal Kit, U Seal 15mm, Karcher

SKU 8.725-358.0 KAR Category
  • 15 mm U Seal Kit
  • Rated for 185° F
  • Services three (3) cylinders

*One (1) kit is required for complete pump repair

Genuine Karcher OEM Parts

MSRP: $108


Part Number: 8.725-358.0-KAR
Cross Reference Part Number(s): 87253580, 87254160

Pressure washer pump water Seals are a wear item in a pump because of the intense pressure they are subjected to. Karcher’s nested U-Seal technology holds up better.

The new technology of this U-Seal design, where the pump actually “nests” the seals of the pump’s high-pressure packing assembly in place, supporting the side walls, results in greatly increased seal life, allowing for extended time between seal replacement. The nesting assembly is stronger and holds up better to spikes in water pressure, which occur every time the gun is triggered.

THIS KIT DOES NOT INCLUDE BRASS PRESSURE RING OR BRASS INTERMEDIATE RING. If the brass pressure or intermediate rings show sign of damage or wear, please purchase a Complete Seal Kit.

Note: U Seals are NOT directly interchangeable with V Seals. Should your pump use a V Seal design contact us for assistance with finding compatible seals.

See Additional Information for a list of compatible pumps.



Karcher Pump Models

KM3540R.2, KM3540R.3, KS3040G.2, KS3040G.3, KS3540G.2, KS3540G.3, KS4040G.2, KS4040G.3, KS5030G.2, KS5030G.3

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Memorial Day Observance

In honor of the Memorial Day weekend, Shop Pressure Washer Parts will be operating at limited capacity on Friday, May 24th, 2024, and will be closed on Monday, May 27th.

As a result, orders placed after 12:00pm (PDT) on May 24th may not be processed until Tuesday, May 28th. 

If you have any questions, please feel free to call us during our regular business hours, 7:30a-4:00p (PDT), at (888) 269-0172 and we will be happy to help!

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