Metallic Seals For Extreme Temperature Pressure Applications 620422

This paper concerns the design, development and evaluation of metallic seals to meet the extreme conditions of temperature and pressure experienced in fluid power systems of advanced aerospace vehicles.
The basic principles and design problems that characterize the use of metallic seals are discussed. Single and two-stage rod seals for 4000 psi, -65 F to +1000 F, hydraulic system applications using mineral oil and polyphenyl ether fluids are described. The performance evaluation of metallic and graphite piston rings are included. The selection of rod-gland material combinations and surface coatings are discussed. Static seal configurations for use at 4000 psi and temperatures up to 1000 F are also described.


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