COMPRESSIBLE PACKING
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United States of America Patent
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Issued Date -
Nov 21, 2013
app pub date -
May 15, 2013
filing date -
May 15, 2012
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A compressible anti-extrusion packing for sealing valve stems, shafts and rods having an interbraided, round braided or square braided outer layer disposed over a densified interbraided, round braided or square-braided core. In certain embodiments, the compressible packing includes a metal jacketed flexible graphite yarn interbraided as a core and an interbraided outer layer made of flexible graphite yarn with a carbon carrier. In one embodiment, the metal jacket is a knitted metal jacket. The core is densified by mechanical compression to control density and size.
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