Failure Pattern
Occurring primarily in dynamic seals involving reciprocating, oscillating, or rotary motion, abrasion can be identified by a flattened surface on one side of the O-ring's cross section.

Problem Sources

• Metal surfaces too rough (acting as an abrasive)
• Metal surfaces too smooth causing inadequate lubrication
• Poor lubrication
• Excessive temperatures
• System contaminated with abrasives

Suggested Solutions

• Use recommended metal finishes
• Provide adequate lubrication (consider internally-lubed O-rings)
• Check material compatibility with system temperature
• Eliminate abrasive contamination with filters and/or wiper seals
• Consider changing to a more abrasive resistant O-ring material such as carboxilated nitrile or urethane (see Material Selection Guide in the Seal Design Guide)

O-RING RULE OF THUMB #4

Static applications are more tolerant of material and design limitations than dynamic applications. » Learn More