Enabling Materials for Magnetic Fusion Energy
Not Available Materials used in the construction of aircraft hydraulic and fuel systems o-rings must provide long term performance in aggressive chemical environments over a wide range of temperatures and loads. Current o-ring materials, while chemically compatible with existing aircraft fuels and hydraulic fluids, are subject to both low temperature and high temperature performance deficiencies and failure. New o-ring materials are needed that exhibit good low temperature performance characteristics at -40 degrees F, with a preference for -65 degrees F performance, while maintaining durability and service life requirements at operating temperatures up to 250 degrees F in fuels systems and 275 degrees F in hydraulic systems. Under the Phase I program, METSS will demonstrate the technical feasibility of using available material technologies to develop low temperature compression set resistant o-ring materials for use in aircraft hydraulic and fuel systems. The program plan presented by METSS will build on recent developments in rubber chemistry that have resulted in the extension of performance properties at both low and high temperatures. While the major program challenge, and hence emphasis, is addressing low temperature performance and service requirements, selected materials must perform over a broad temperature range in very aggressive chemical environments. As such, these factors will be of equal consideration in the selection of candidate replacement materials.
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