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Parker O-Ring Squeeze Formula:
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The Parker O-Ring Squeeze Formula calculates the compression ratio of an O-ring in a gland using the cross-section diameter and gland depth. This measurement is critical for ensuring proper sealing performance and longevity of O-ring applications.
The calculator uses the Parker O-Ring formula:
Where:
Explanation: The formula calculates the percentage compression of the O-ring by comparing the difference between the cross-section diameter and gland depth relative to the original cross-section size.
Details: Proper O-ring squeeze is essential for creating effective seals. Too little squeeze may cause leakage, while too much squeeze can lead to premature failure, extrusion, or excessive friction.
Tips: Enter cross-section diameter and gland depth in millimeters. Both values must be positive numbers, with cross-section diameter greater than zero.
Q1: What is the ideal O-ring squeeze percentage?
A: Typical recommended squeeze ranges from 10-30% for static applications and 10-20% for dynamic applications, depending on material and operating conditions.
Q2: Why is proper O-ring squeeze important?
A: Proper squeeze ensures adequate sealing force while preventing excessive compression that can cause damage, extrusion, or reduced service life.
Q3: How does material affect squeeze calculations?
A: Different elastomer materials have varying compression set characteristics and hardness, which may require adjustment of recommended squeeze percentages.
Q4: What units should be used for measurements?
A: While millimeters are standard, the formula works with any consistent unit system as long as both measurements use the same units.
Q5: Are there limitations to this calculation?
A: This calculation provides theoretical squeeze and should be verified with actual application testing, as factors like temperature, pressure, and material properties can affect performance.