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Title:
SEALING MEMBER FOR MECHANICAL SEAL
Document Type and Number:
WIPO Patent Application WO/2019/058840
Kind Code:
A1
Abstract:
This sealing member for a mechanical seal is a peroxide vulcanized molded article of hydrogenated nitrile rubber containing less than 20% of bound acrylonitrile and having an iodine number of 20 mg/100 g or less. The sealing member for a mechanical seal is obtained as a peroxide vulcanized molded article of a hydrogenated nitrile rubber composition containing, with respect to 100 parts by weight of hydrogenated nitrile rubber, 0-5 parts by weight of carbon black, 20-100 parts by weight of silica, 0.5-3 parts by weight of a silane coupling agent, and preferably further containing 50 or less parts by weight of a titanium oxide non-reinforcing filler. The obtained vulcanized molded article provides a sealing member for a mechanical seal that can achieve desired long-life-coolant (LLC) resistance and excellent compression set resistance characteristics, cold resistance, workability, hardness, and the like.

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Inventors:
ABE Shunsuke (Tsujidoshinmachi 4-chome Fujisawa-sh, Kanagawa 42, 〒2510042, JP)
MURAKAMI Hideyuki (Tsujidoshinmachi 4-chome Fujisawa-sh, Kanagawa 42, 〒2510042, JP)
Application Number:
JP2018/030829
Publication Date:
March 28, 2019
Filing Date:
August 21, 2018
Export Citation:
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Assignee:
NOK CORPORATION (12-15, Shibadaimon 1-chome Minato-k, Tokyo 85, 〒1058585, JP)
International Classes:
C09K3/10; C08K3/04; C08K3/22; C08K3/36; C08K5/14; C08K5/54; C08L15/00; F16J3/04; F16J15/10; F16J15/34
Domestic Patent References:
WO1996017015A11996-06-06
WO2005044912A12005-05-19
Foreign References:
JP2014077095A2014-05-01
JPH09132675A1997-05-20
JP2005285537A2005-10-13
JPH08100084A1996-04-16
Attorney, Agent or Firm:
YOSHIDA Toshio et al. (YOSHIDA PATENT OFFICE No.401, Esty Maison Shirokanedai Bldg. 1-4, Kami-Osaki 1-chome, Shinagawa-k, Tokyo 21, 〒1410021, JP)
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