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


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