Shaft sealing devices for hydraulic machines

Details Shaft sealing devices for hydraulic machines Shaft sealing devices for hydraulic machines

1982-01-12

1983-10-11

Smith, Robert I.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277199, 277DIG6, F16J 1540

Patent

active

044087675

ABSTRACT:
In a shaft sealing device for a hydraulic machine, a packing box is provided about a rotatable shaft of the hydraulic machine. A number of packings are encased in the packing box so that the sliding surfaces of the packings are urged against the movable shaft. Each of the packings is made of tetrafluoroethylene resin mixed with a filler, and molded under a pressure into a desired shape. The filler is selected from the group consisting of carbon powder, graphite powder, carbon fibers, glass fibers, and bronze powder, and combinations thereof.

REFERENCES:
patent: 3305241 (1967-02-01), Hart
patent: 4329127 (1982-05-01), Tschirky et al.

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