Compression set resistance determines FFKM O-ring longevity under constant sealing stress in static and dynamic applications. Premium FFKM compounds exhibit compression set values below 20% after 70 hours at 400°F, indicating excellent recovery and sustained sealing force. This property prevents permanent deformation that creates leakage paths as seals age under load. Superior compres... https://globalsealstech.com/ffkm-seals/