SELF-LUBRICATED COMPOSITE MATERIALS FOR HIGH-PRESSURE AIR SEALS (FILAMENT-WOUND STRUCTURES).
Research and development phase rept.,
NAVY MARINE ENGINEERING LAB ANNAPOLIS MD
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In a continuing program to exploit the unusual properties and potential advantages of solid composite lubricants, a sleeve-type seal based on reinforced polytetrafluoroethylene was developed as a piston seal for high-pressure air compressors. The status of the material development for maximizing the effectiveness and life of this seal is reported. Specifically considered is the use of an organized metallic filament-winding technique to provide a superior reinforcing matrix as compared to the randomly dispersed particles and fibers used heretofore. New approaches to combinations of composites for this and other applications have been uncovered. It is possible to expect reliable compressor operation at 5000 psi using such seals in lieu of conventional split rings for periods beyond 1000 hours with very low rates of wear and air leakage. Author
- Adhesives, Seals and Binders
- Laminates and Composite Materials
- Machinery and Tools