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  • How to calculate O-ring squeeze ratio?

    Discussion in 'Calculations' started by audun1, Aug 3, 2022 at 10:46 AM.

    1. audun1

      audun1 New Member

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      Hello.

      I am designing a housing for a pressure sensor and I am a bit confused.
      Some places on the internet O-ring squeeze ratio is expressed as the amount of o-ring squeeze divided by the o-ring cross section.
      Other places it is expressed as the amount of squeeze divided by groove depth.

      These two methods of calculation give very different answers.
      My O-ring is 1.778mm thick and the groove is 1.325mm deep.
      The first method gives a squeeze ratio of 25.5%, the other 34%.

      Which of these is the correct way?
       
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