According to testing and customer data, Simrit's E454 EPDM (ethylene-propylene rubber) O-ring sealing systems demonstrated better performance than other types of O-rings in key hydraulic systems, braking systems, and primary and secondary flight controls of commercial aircrafts.
E454 EPDM O-ring
The hydraulically powered primary and secondary flight control systems are vital in modern aircrafts, as they control the aircraft functions, including stop, descend, climb, turn and fly. Hence, to ensure passenger safety, all components of the aircraft systems, including the sealing solutions, are important.
Simrit’s materials development manager, Dr. Robert W. Keller commented that the company’s E454 compound fulfills the specifications of NAS-1613 Rev. 5 in all types of phosphate ester hydraulic fluids available in the market.
Vinay Nilkanth, who serves as Vice President of global Sales of Aerospace at Simrit, stated that in order to maintain the quality and consistency of the E454 compound, the company produces the material at its Nadcap and AS9100-certified plant located in Santa Ana, California.
A major producer of flight control hydraulic power systems recently selected the E454 O-rings and tested them as per AS1241using the latest Type V phosphate ester hydraulic fluids in a huge body commercial airplane. The E454 O-rings maintained their physical properties and dimensions even after numerous hours of service. In addition, a major component producer for phosphate ester hydraulic flight controls replaced all its components with Simrit E454 O-rings to prevent leakage problems on numerous commercial airliners.
Source: http://www.simritna.com