DuPont Performance Polymers Kalrez® AeroSeal™ 7797 Fluoroelastomer

DuPont™ Kalrez AeroSeal™ 7797 perfluoroelastomer parts are a specialty black product specifically targeted for use in applications requiring high hardness/higher modulus properties. It offers outstanding thermal stability and compression set resistance and has excellent seal force retention properties. It also offers excellent resistance to HTS (High Thermo-Oxidative Stability) gas turbine engine lubricating oils and has excellent response to temperature cycling effects. Kalrez AeroSeal™ 7797 has excellent mechanical properties and is well suited for both static and dynamic sealing applications. A maximum continuous service temperature of 325 C (617 F) is suggested. Short excursions to higher temperatures may also be possible. Performance Features/Benefits Outstanding thermal stability Outstanding compression set resistance Excellent seal force retention properties Excellent resistance to high thermo-oxidative stability (HTS) gas turbine engine lubricating oils Excellent response to temperature cycling effects Excellent mechanical properties Lower coefficient of thermal expansion (CTE) versus other Kalrez® products thus minimizing the need to increase the free volume of the seal gland when upgrading from fluoroelastomers (FKM) to perfluoroelastomers (FFKM).