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    Moisture in my manometer

    Hi 7weight, Thanks for your reply. However, I've looked through all of the lists of O rings in the past including the ones you have linked here but there's no mention of that particular one anywhere that I could see. I guess I'll just have to remove it and take it to my o ring supplier and grab...
  2. B

    Moisture in my manometer

    Hi All, This is my first post. I am currently replacing all the seals in my HW100 air cylinder and cant seem to find the correct size O-ring that fits in behind the pressure gauge (manometer) as in pic. Can anybody advise please?? Cheers