Mechanical seal

Details Mechanical seal Mechanical seal

1980-08-07

1982-06-22

Smith, Robert I.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

F16J 1534

Patent

active

043358888

ABSTRACT:
A mechanical seal wherein a smooth sealing end surface is formed at one end of a rotation seal ring and a stationary seal ring, while a sharp edge-like sealing end portion in slidable contact with the smooth sealing end surface is formed at the other of seal rings, the sealing end portion having a width of 0.1 to 0.3 mm, and the spring face pressure to be imparted to that portion of sealing end portion which slidably contacts with the sealing end surface is set to a relatively high value from 30 to 50 kg/cm.sup.2. Materials of which the sealing end surface and the sealing end portion are made are selected from hard ceramics.

REFERENCES:
patent: 2122378 (1938-06-01), McCormack
patent: 2354478 (1944-07-01), Reinhardt et al.
patent: 2949321 (1960-08-01), Tracy
patent: 3180648 (1965-04-01), Kupfert et al.
patent: 3201135 (1965-08-01), Hayatian
patent: 3392984 (1968-07-01), Reinsma et al.
patent: 3767212 (1973-10-01), Ludwig
patent: 3810637 (1974-05-01), Bonvin
patent: 4087100 (1978-05-01), Yoshihashi et al.
patent: 4104169 (1978-08-01), Muller et al.
patent: 4118040 (1978-10-01), Christ et al.

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