Equation for calculating o-ring compression

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SUMMARY

The equation for calculating O-ring compression is essential for ensuring effective sealing in various applications. O-rings function primarily by utilizing fluid pressure differences to maintain contact with sealing surfaces rather than relying solely on compression. Understanding the specific application context is crucial for accurate calculations and effective use of O-rings.

PREREQUISITES
  • Understanding of fluid mechanics and pressure differentials
  • Familiarity with O-ring materials and their properties
  • Basic knowledge of mechanical sealing principles
  • Spreadsheet software proficiency for calculations
NEXT STEPS
  • Research the specific equation for O-ring compression calculations
  • Explore different O-ring materials and their compression characteristics
  • Learn about the impact of fluid pressure on O-ring sealing effectiveness
  • Investigate best practices for designing O-ring grooves in mechanical assemblies
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Engineers, product designers, and anyone involved in mechanical sealing applications who require precise calculations for O-ring performance.

Spoolx
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For whatever reason this equation is slipping by me, I don't want to use a calculator though because I am building a spreadsheet.

Can someone please tell me the equation to calculate o-ring compression?

Thanks
 
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O-rings are used in many different situations. You will need to be more specific about your application.

An O-ring usually seals because of the fluid pressure difference holding the ring against a wall, not because it is compressed.
 
I have encountered a vertically oriented hydraulic cylinder that is designed to actuate and slice heavy cabling into sections with a blade. The cylinder is quite small (around 1.5 inches in diameter) and has an equally small stroke. The cylinder is single acting (i.e. it is pressurized from the bottom, and vented to atmosphere with a spring return, roughly 200lbs of force on the spring). The system operates at roughly 2500 psi. Interestingly, the cylinder has a pin that passes through its...

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