Title:
Sealing device
Document Type and Number:
Japanese Patent JP6081179
Kind Code:
B2
Abstract:
Provided is a sealing device equipped with a seal lip and a dust lip, and having a structure that makes it difficult for the dust lip to deform by swelling, thereby being less prone to sealability losses, even when anti-static measures (i.e., measures against radio noise) are implemented. The sealing device is provided with a seal lip, which seals in such a manner that foreign matter outside a machine does not penetrate into the machine, and a dust lip that makes it difficult for foreign matter to reach the seal lip, and is characterized in that the seal lip is formed by a conductive rubber material, and the dust lip is formed by a material having lower conductivity than the seal lip. The seal lip comprises a material obtained by blending 3 to 50 parts by weight of a conductive carbon with 100 parts by weight of rubber. The dust lip comprises a material obtained by blending 1 part by weight or less of a conductive carbon with 100 parts by weight of rubber.
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Inventors:
Atsushi Suzuki
Application Number:
JP2012273225A
Publication Date:
February 15, 2017
Filing Date:
December 14, 2012
Export Citation:
Assignee:
NOK CORPORATION
International Classes:
F16J15/3232; F16J15/3284
Domestic Patent References:
| JP2007146879A | ||||
| JP2012097213A | ||||
| JP201247297A | ||||
| JP200112613A |
Attorney, Agent or Firm:
Yoichi Nomoto
Kiriyama Dai
Kiriyama Dai
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