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You are here: Home / Failure Analysis / Rubber Failure Analysis: Rubber Seal Failure Analysis

Rubber Failure Analysis: Rubber Seal Failure Analysis

January 22, 2012 By Tom Read Leave a Comment

A California failure expert witness was asked to determine the root cause of a rubber gasket leak.

The molded rubber gasket seal was integrated into a hydraulic lift operating at 650 psi. Over time it had developed a very small hole and approximately 60 gallons of hydraulic oil escaped through this small leak. Read Consulting Failure Analysis Lab was asked to perform a detailed failure analysis to determine the cause of the leak.  The subject rubber seal failed as a result of a rubber molding defect. During the molding operation , here was a region where the flowing rubber failed to re-bond properly. Over time the high pressure (650 psi) hydraulic oil created a hole in the weakened rubber and this resulted into a rubber failure and a hydraulic leak. Upper left is a 30X  photo-micrograph of the pinhole leak. The leak “protrudes” outward showing that the failure was created as a result of the hydraulic pressure.

Filed Under: Failure Analysis Tagged With: Leak, Molding Defect, Rubber Gasket, Rubber Seal

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Read Consulting Failure Analysis

Thomas L. Read, PhD,
1435 Fulton Road Santa Rosa, CA
Phone: 707-494-5089
email: info@readconsulting.com

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Read Consulting Failure Analysis

Thomas L. Read, PhD,
1435 Fulton Road Santa Rosa, CA
Phone: 707-494-5089
email: info@readconsulting.com

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