Rotary lip seal

Details Rotary lip seal Rotary lip seal

1983-08-01

1985-01-01

Smith, Robert I.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277183, F16J 1534

Patent

active

044913303

ABSTRACT:
This disclosure relates to a lip seal designed to seal a space between a rotatable shaft and a housing part around the shaft. The housing part is formed of relatively flat material and has a hole formed in it, through which the shaft extends. The seal includes a support band that is sized to have a tight interference fit on the shaft. Extending radially outwardly from the band are two opposed lips that form an annular groove therebetween. The seal is positioned with the housing part in the groove and the lips engaging opposite sides of the housing part. The two lips are constructed with a preload that causes them to sealingly engage the housing part when the housing part is positioned in the groove. The band rotates and makes a sealed connection with the shaft, and the two lips slide against the housing part and form seals therebetween.

REFERENCES:
patent: 1891706 (1932-12-01), de Ram
patent: 2227408 (1940-12-01), Hately
patent: 2831713 (1958-04-01), Smith
patent: 3680977 (1972-08-01), Rabouyt et al.

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