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Advanced Ceramic Wafer Seals Demonstrated at 2000 deg. FDurable, high-temperature sliding seals are required in advanced hypersonic engines and around movable control surfaces on future vehicles. These seals must operate at temperatures of 2000 to 2500 F, limit hot gas flow, remain resilient for multiple cycles, and resist scrubbing damage against rough surfaces. Current seal designs do not meet these demanding requirements, so the NASA Glenn Research Center is developing advanced seals and preload devices to overcome these shortfalls. An advanced ceramic wafer seal design and two silicon nitride compression spring designs were evaluated in a series of compression, scrub, and flow tests.
Document ID
Document Type
Dunlap, Patrick H.
(NASA Glenn Research Center Cleveland, OH, United States)
Steinetz, Bruce M.
(NASA Glenn Research Center Cleveland, OH, United States)
DeMange, Jeffrey J.
Date Acquired
September 7, 2013
Publication Date
June 1, 2005
Publication Information
Publication: Research and Technology 2004
Subject Category
Nonmetallic Materials
Distribution Limits
Work of the US Gov. Public Use Permitted.
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