FFKM materials maintain physical properties across an astonishing temperature range from -40°C to +330°C continuously, with some specialized grades exceeding +345°C in short-term excursions. This thermal stability surpasses all other elastomers including FKM, silicone, and EPDM, enabling FFKM seals to function in applications where temperature cycling would destroy conventional O-ring... https://globalsealstech.com/ffkm-seals/