Nok Corporation

Tetsuo Tasaki

Takehiro Nakagawa

Akihiro Sato

Hiromi Takahashi

Junya Hoshi

Masahiro Anzai

A lip type end face sealing device having excellent sealability to different kinds of liquids on both sides in the axial direction and having excellent durability. A case is tight fitted to an inner peripheral face of a housing and includes case members. One pair of seal lips is integrally fitted to inner peripheral flange parts, positioned oppositely each other in the axial direction, and opened in a tapered shape. One pair of the seal lips is slidably contacted with flange parts of slingers tight fitted to an outer periphery of a rotary shaft. Pressure in seal internal spaces between the seal lips is released through a vent hole.

Lip type end face sealing device

An objective of the present invention is to provide a lip type end face sealing devicehaving excellent sealability to different kinds of liquids on the both sides in the axial direction and having excellent durability. A casetight fitted to an inner peripheral faceof a housingcomprises case membersand. One pair of seal lipsandis integrally fitted to inner peripheral flange partsand, positioned oppositely each other in the axial direction, and opened in a tapered shape. One pair of the seal lipsandis slidably contacted with flange partsandof slingersandtight fitted to an outer periphery of a rotary shaft. Pressure in seal internal spaces Sbetween the both seal lipsandand the both slingersandis released through a vent holeopened on the inner peripheral faceof the housing, an air holeopened on the case, and between the case membersand

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Tokyo, Japan

Tetsuo Tasaki