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Description

Your O-ring seal creates a watertight seal between pressure washer parts 

Pressure washers use rubber rings in the shape of the letter "O" that seal off connections between pipes, hoses, or fittings when they cross.

The name of this seal is derived from its shape, which effectively prevents water seepage while also securing pressure washer connections.

Why do you replace your O-ring seal?

The rubber material of the O-ring can degrade or become worn with exposure to high pressure, temperature fluctuations, chemical exposure, or general wear and tear. 

When O-rings become damaged, they lose their elasticity and fail to create a proper seal, which results in leaks or reduced pressure in the pressure washer system. 

Is it a genuine spare part? 

This O-ring seal by Karcher is a genuine pressure washer replacement part. Your pressure washer can work as good-as-new when cleaning surfaces. 

Manufacturers Part Number:

  • 6.363-628.0

Alternative Part Numbers:

  1. 6.363-027.0
  2. 63630270
  3. 63636280

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Safety note:

Warning: Always unplug any appliance from the electricity supply before carrying out any work or testing on it.

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Questions And Answers

1 Answer(s)
Hi I have an old Karcher 300 the the rubber seal o ring on the hose where it attaches to the machine needs replacing will these fit
By Anthony - Bolton - 24/06/2020
Hi Anthony, please submit a part enquiry and include the TYP number from the bottom of the pressure washer beginning with a 1 so we can check this.
By Jordan - Staff Member
1 Answer(s)
Please can you let me know if this is the 10mm o ring for the handle connection to the hose ? Many Thanks Phil
By Philip - Stourbridge - 27/03/2021
Hi Philip, please submit a part enquiry including your full model details so we can confirm the correct o-ring required.
By Jordan - Staff Member
1 Answer(s)
Hi I have a karcher pressure washer , k2.54m 1.672-497 and i am looking for an o ring to fit on the water outlet pipe, will this fit? Cheers Geoff
By GEOFF - KIDLINGTON, Oxfordshire - 27/03/2021
Hi Geoff, the o-ring required is only available complete with the outlet. This is part number RS508276.
By Jordan - Staff Member
1 Answer(s)
HI I have a Karcher K2 compact ... 1.673-127.0. Will this ring fit the pressure hose where it connects to the machine?
By Paul - Portsmouth - 02/04/2021
Hi Paul, I don't believe this seal is for the hose to machine. To get the correct seal, you'd need to purchase the complete seal kit. This is part number RS512628.
By Jordan - Staff Member
1 Answer(s)
Hi my k2 dirt buster Lance orang has split so you have s-ares
By Darryl - London - 05/04/2021
Hi Darryl, please submit a part enquiry including the TYP number from the bottom of the pressure washer beginning 1. so we can check this.
By Jordan - Staff Member

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