Seal assembly for use in harsh environments
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United States of America Patent
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Oct 11, 2016
Grant Date -
Dec 19, 2013
app pub date -
Jun 19, 2012
filing date -
Jun 19, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
A sealing assembly, for example a piston ring, for use in harsh environments, e.g., high radiation levels. The piston ring has an annular sealing surface which together with a member forming a radially outer annular cylinder surface, e.g., a cylinder, forms a seal pocket. Received in the seal pocket is an annular seal comprised of a plurality of wraps of at least one strand of a substantially incompressible and inelastic material such as graphite fiber. The assembly further includes a compression ring and compression assembly which compresses the seal body between the support surface and the compression ring to displace the seal body into sealing engagement with the radially inner and outer sealing surfaces.
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