Seal assembly
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United States of America Patent
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Aug 30, 2011
Grant Date -
N/A
app pub date -
Apr 10, 2003
filing date -
Feb 9, 1999
priority date (Note) -
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Abstract
A seal for acceptance in an annular gland in a piston comprises an annular primary sealing element, an annular secondary sealing element disposed radially inwardly of the primary sealing element, and a pair of axially spaced back up rings disposed in axially spaced relation on opposite sides of the primary sealing element and having radially inner portions, respectively, engaged with the primary sealing element so as to lock the backup rings in the gland of the piston.
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