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!