Stock material or miscellaneous articles – Sheet including cover or casing – Noninterengaged fibered material encased
Patent
1991-04-29
1993-07-06
Lesmes, George F.
Stock material or miscellaneous articles
Sheet including cover or casing
Noninterengaged fibered material encased
57230, 57231, 57232, 87 1, 87 6, 87 9, 277213, 277227, 277229, 277230, 277235R, 277DIG6, 428 74, 428245, 428260, 428297, 428365, 428375, 428377, 428408, 428380, 428397, 428902, B32B 104, D06P 700
Patent
active
052252620
ABSTRACT:
A high temperature, high pressure resistant packing (e.g., for the packing gland of a valve stem) has a core of density 1.3-1.6 gm/cc that includes a plurality of strands, each strand including a flexible graphite tape, longitudinally corrugated and folded into at least two longitudinally extending partially superimposed layers. Preferable, each strand is overknitted with a reinforcing wire, the strands in the core are braided, and a jacket, which includes a carbide fiber, an inorganic fiber, and a phenolic fiber, is disposed about the core.
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A. W. Chesterton Co.
Lesmes George F.
Withers James D.
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