Solutions for Compression Set Failure


Compression set failure produces flat surfaces on both sides of the O-Ring’s cross-section.

This can be caused by several problem sources:

• Elastomers with poor compression set properties

• Low heat resistance of material

• Excessive swelling of material in system fluid

• Too much squeeze to achieve seal

• Incomplete curing of material during production

If you are experiencing compression set failure, try these 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

If these solutions don’t work, contact our Experts for additional help!