O-ring

Discussion in 'PSI Superchargers Tech Questions' started by Iron Mike, Jun 5, 2012.

  1. Iron Mike

    Iron Mike New Member

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    What depth / width do you cut for 1/8 5/32(4mm) and 3/16 o-rings when doing manifolds for between manifold and setback plate / blower?
     
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    Iron Mike, Jun 5, 2012
  2. Moparious Maximus

    Moparious Maximus Member

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    There are formulas for that in the machinery handbook that will get it perfect but probably confuse the matter. I leave the O-ring out of the groove around 15% of its diameter. So if you are using a .125 diameter O-ring leave the depth short by .018-.020, you should widen the groove some to give it room to move...but that makes them not want to stay put during assembly. On mine I left the width of the grooves fairly tight so they would stay put better and it works fine but does work the O-rings into a square shape...they still seal thought.

    Not gonna say my way is the only way but it works for me.
     
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    Moparious Maximus, Jun 5, 2012
  3. Slayer

    Slayer Member

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    Go to Parkers web site (WWW.Parker.com). They should have some info on what you are looking for. Consider it a face seal type. See Ya!
     
    #3
    Slayer, Jun 5, 2012
  4. SoDak

    SoDak Active Member

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    For 20 years we have been doing our own adaptor plates and tops of intakes with .125" o-ring by using a .125" endmill and going .115" deep.

    Be careful that some shops will call o-ring 1/8" but it is actually .139" in diameter.
     
    #4
    SoDak, Jun 5, 2012

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