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Seal Failure Analysis

How to Assess Seal Failure

Successful seal performance requires careful consideration of process conditions, elastomer properties and seal design. A deficiency in any one of these areas will result in a reduction of seal service life. If a seal failure does occur, a systematic approach should be taken to determine the root cause of the failure.

Causes of Seal Failure

  • Chemical attack
  • Thermal attack
  • Process pressure
  • Mechanical failure
  • Seal design
    • Groove dimensions
    • O-ring size
    • Elastomer compound
seal failure 


Samples of failed O-rings were submitted to DuPont for evaluation. Corrective action as well as suggestions to improve seal performance were provided.

For elastomer compatibility information visit our web site's Chemical Resistance Guide or request a copy of the Kalrez® Application Guide.