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  1. #1
    Join Date
    Jul 2012
    Location
    Jersey
    Posts
    647

    Default Heat exchanger o-rings. Are they something special?

    My service manual advises the o-rings on the intercooler and heat exchanger are replaced every 5 years as part of routine checking of the tube stacks. Now each one of these coolers has 4 o-rings which are 20 each from Barrus. Are they anything special or would they be available from other sources for a lot less. I know the dimensions which helps.

  2. #2
    Join Date
    Dec 2016
    Location
    Somewhere in the Solent
    Posts
    47

    Default Re: Heat exchanger o-rings. Are they something special?

    Not to my knowledge.

    I replaced mine in January, following a strip and clean. I just removed the old ones, measured them and the heat exchanger element with digital vernier calipers, replaced with standard O-Rings and it's been fine ever since.

  3. #3
    Join Date
    Mar 2017
    Location
    Me; Nth County Dublin, Boat;Malahide
    Posts
    448

    Default Re: Heat exchanger o-rings. Are they something special?

    Quote Originally Posted by Dawnrazor View Post
    Not to my knowledge.

    I replaced mine in January, following a strip and clean. I just removed the old ones, measured them and the heat exchanger element with digital vernier calipers, replaced with standard O-Rings and it's been fine ever since.
    +1, out of my box of assorted o-rings from Lidl (€2.99, AFAIK ).

  4. #4
    Join Date
    Mar 2005
    Location
    East Sussex.
    Posts
    20,049

    Default Re: Heat exchanger o-rings. Are they something special?

    Useful guide here. http://www.martins-rubber.co.uk/blog...lection-guide/ I have the box of rings from Lidl and suspect that they are Viton.
    Best choices for a heat exchanger may well be Nitrile or Silicone, and I am pretty sure that Martins could advise you.
    Working on immortality - One day at a time.

  5. #5
    Join Date
    May 2001
    Posts
    14,151

    Default Re: Heat exchanger o-rings. Are they something special?

    I buy my O-rings from an outfit that specialises in servicing heavy hydraulic machinery like mobile cranes, earth movers, excavators and similar beasts. If in doubt about the dimensions take one of the old rings with you because they can go up in steps of 0.01mm. The cost, at least for the ones that I use (a 27hp marine Diesel) is nowhere near the figures that you mention.
    I also use their O-rings as driving 'belts' for the surface planer/thicknesser that is in the woodwork section of my home workshop!
    Should we paint what is on a face, what is inside it, or what is behind it?

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