Aerospace Engine Oil System Seals


High-heat and fuel-resistant aircraft engine seals

DuPont materials provide time-tested reliability for aircraft engine O-rings, gaskets, seals, washers and bushings to minimize unscheduled downtime and reduce operating costs. 


DuPont™ Kalrez® O-rings, gaskets and custom seals stand up against jet fuel, engine lubrication oils, hydraulic fluids, rocket propellants and oxidizers—all in the presence of extreme temperatures. 

Kalrez® perfluoroelastomer offers:

     • Excellent thermal capability versus other elastomers

     • Excellent chemical compatibility

     • Low corrosion 

DuPont™ Vespel® is the material of choice for bushings and washers that must perform in the high-temperature environment of aircraft engines. Components from variable vanes to torque box/bell crank linkage arms can benefit from the wear-resistant, low-friction properties of Vespel®. The key benefits of Vespel® include:

     • High performance in environments in excess of 315°C

     • Longer component life

     • Weight savings over metal

     • Lower friction than metal


The Proof is in the Performance

When customers bring us challenges, we put the expertise of DuPont scientists to work to create high-performance solutions. 


How can we help you?