Karcher Pressure Washer O Ring Kit

Stock Number: ES537803

Manufactured by Karcher

In Stock Available for immediate despatch

Rated 4.7 out of 5 (65 customers)

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Karcher Pressure Washers


Pressure Washer O-Ring Kit

Keep your pressure washer hose and hand gun leak-free with these replacement seals. Each pack contains sixteen O-rings and four yellow rubber stoppers. The O Rings consist of 5 different sizes, to ensure all your needs are covered. You will soon be able to use your Karcher pressure washer without fear of a leak again in no time!


  • 16 O-rings (across 5 sizes)
  • 4 Yellow rubber stoppers

Genuine spare part for select models of Karcher pressure washers.

Please check the suitable model fit list to ensure that this is the correct part for your appliance.

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Product Reviews

Rated 4.7 out of 5 (65 customers)
Write a review
  • o rings

    • 5.0 out of 5
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    By - swansea

    Good value money easey to fit and would bye some when needed ok
  • good price for them

    • 5.0 out of 5
    • 5.0 out of 5
    • 5.0 out of 5
    • 5.0 out of 5

    By - swansea

    Easy to fit and good value for money i would buy them again when i need then ok
  • Quality and well presented

    • 5.0 out of 5
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    • 5.0 out of 5

    By - Engand ( Southend on Sea)

    i was not only impressed by the quantity included in the blister ,but by the fully comprehensive card that shoed not only the quantity and size of each O ring but exactly where each one fitted. The only crytisism i have is that once you open the pack you have to find something to keep them in ,if a more reusable container was used this would make the product perfect.

Ask & Answer

(22 Questions and 21 Answers) Ask a question
  • Q I have a K399 when I switch it on it surges until I press the trigger on the gun. 2 Answers

    By crippin - Pontypool Torfaen - 08 January 2012

    • A
      you may have a leaking O ring

      By Clive - Swansea - 06 June 2013

    • A
      Hi Crippen sounds like you have a fracture in the control head as I did, this opens when the machine builds up presure and then releases it through the fracture, it is likely the fracture is under the metal head plate used to secure the unit head hence you cant see it, I know your post is long ago but this may help others as when I read the posts on the espares site it was no end of help to me. If the seals are ok on everything else I suggest replacing the control head housing.

      By Rob - N Ireland - 08 January 2013

  • Q Why does my k297ml loseing pressure 1 Answer

    By Joseph - Long island u s a - 16 November 2015

    • A
      If there is always low pressure and no leaks the problem is likely to be worn seals or a stuck valve.

      By Chris eSpares Staff - 17 November 2015

  • Q karcher k2.94m leaking 1 Answer

    I went to use my pressure washer today for the first time in a couple of months. When I turned the hose on water poured out of the bottom of the washer and the motor does not run. If you pick the washer up and gently move it it rattles like there is a loose plastic ball inside. Do you know what the issue is please and is it repairable?

    By Stuart - Harrogate - 10 October 2015

    • A
      The likely cause of leaking is frost damage causing splitting of the cylinder head. Disconnect the power and refit the hoses to identify where it is leaking from.

      By Chris eSpares Staff - 12 October 2015

  • Q Karcher K7.85 - pressure blows back into hosepipe when trigger is released 1 Answer

    The washer works fine until trigger is released, then at the moment the spray from the lance stops, the pressure blows back into the supply hosepipe. This has caused the "Tube water intake" to split, and also pop off the casting it connects to. Is there a faulty pressure relief valve, or supply one-way-valve or similar that could cause this ? If so, which parts should I look to replace? Thanks

    By Simon - Aberystwyth, Wales, UK - 14 July 2015

    • A
      We would have thought that a failure in the internal valves on the cylinder head would not be able to cause this problem and we would check the water supply pressure as it may be excessive. If you are sure you do not have excessive water pressure start by replacing the cylinder head.

      By Chris eSpares Staff - 15 July 2015

  • Q why does my k5-140 pump motor keep stopping and starting when i relise the lance trigger. 1 Answer

    By Howard Roberts - Sunderlans uk - 22 June 2015

    • A
      Any leak or damage to a seal in the high pressure area will cause the 'stop' pressure to escape and the motor will restart. Cure any leaks before replacing seals starting with the pump piston seals first.

      By Chris eSpares Staff - 22 June 2015