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Solutions for Compression Set Failure

Failure Pattern
Common to both static and dynamic seals, compression set failure produces flat surfaces on both sides of the O-ring's cross section.

Problem Sources
  • Elastomers with poor compression set properties
  • Low heat resistance of material
  • Excessive swelling of O-ring material in system fluid
  • Too much squeeze to achieve seal
  • Incomplete curing (vulcanization) of O-ring material during production

Suggested Solutions
  • Employ a low set elastomer
  • Specify an O-ring material that resists both operating and friction generated heat
  • Re-check O-ring material compatibility with system chemicals
  • Reduce O-ring squeeze if possible
  • Inspect incoming O-rings for correct physical properties

O-RING RULE OF THUMB #5

The maximum volume of the O-ring should never surpass the minimum volume of the gland. » Learn More

 
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Apple Rubber Products
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1.800.828.7745 (US and Canada Only)