The O-ring typically fails in its application because of the combined adverse effects of several environmental factors.This article shows and explains them.
O-Ring Failure - 3 Common Reasons
A Guide to common O-Ring failures – Totally Seals
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O-Ring Failure Chart Troubleshooting Guide by Marco Rubber
How to Recognize the Common Causes of O-ring Failure? - IRA
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How to Recognize and Avoid the Common Causes of O-ring Failure
O-RINGS FAILURE ANALYSIS GUIDE - Rubber Seals and Gasket
A Guide to common O-Ring failures – Totally Seals
Why do O-rings fail? A guide to the most common failure modes