Packing ring containing flexible graphite

Details Packing ring containing flexible graphite Packing ring containing flexible graphite

1978-02-01

1980-02-26

Smith, Robert I.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277DIG6, F16J 1520, F16J 1530

Patent

active

041902572

ABSTRACT:
A reformable packing ring comprising compressed particles of flexible graphite. Such packing ring can be used to pack the stuffing box assembly of any pump, valve, or like structure. Because such packing ring undergoes considerable flow when subjected to pressure, it is capable of forming a better interference fit within the stuffing box than presently employed packing rings. As a result of this ability to flow and reform its dimensions under pressure, such packing ring need not be sized as precisely to the dimensions of a particular stuffing box as presently employed rings.

REFERENCES:
patent: 3404601 (1968-10-01), Shane et al.
patent: 3841289 (1973-02-01), Meyers
patent: 4068853 (1978-01-01), Schnitzler
Bulletin TP2-175A, "Thermal Pak TP2 Expansion Joints," Advanced Thermal System Inc., Aug. 1977.

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