1. #1
    Ok for all you engineers out there.

    I have two O-rings one id 6mm & 2mm cross section and another id 7mm & 1.5 cross section.

    I have a bore of 10mm and a piston 9.96mm. What size groove do I need in the piston for hydraulic dynamic use (this is for a powered draw bar) the piston will move about 7mm in the bore.
    ..Clive
    The more you know, The better you know, How little you know

  2. #2
    mekanik's Avatar
    Lives in Barrow in Furness, United Kingdom. Last Activity: 13 Hours Ago Has been a member for 7-8 years. Has a total post count of 559. Received thanks 64 times, giving thanks to others 73 times.
    Hi Clive
    Information should be in there .
    https://www.jameswalker.biz/en/pdf_docs/3-o-ring-guide
    Regards
    Mike

  3. #3
    Clive,

    I design pressure systems up to 30ksi. For up to 15ksi, the starting point is the Parker catalogue:

    http://www.parkerhannifin.ru/upload/...ode5712_en.pdf

    In most cases, imperial o-rings are easier to source but there is always a metric equivalent.
    https://emvioeng.com
    Machine tools and 3D printing supplies. Expanding constantly.

  4. The Following User Says Thank You to komatias For This Useful Post:


  5. #4
    Mike & George Many thanks for the homework you have provided for me. I have found this as well https://oringcalculator.eriksgroup.com/# but I can't seem to get the answer from it. So I will sit down and bang my head against the wall for a bit
    ..Clive
    The more you know, The better you know, How little you know

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