Title:
MECHANICAL SEAL DEVICE AND SLIDING RING THEREOF FOR USE IN AQUEOUS ENVIRONMENT
Document Type and Number:
WIPO Patent Application WO/2016/152437
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a mechanical seal device and a sliding ring thereof for use in an aqueous environment, with which it is possible to exceptionally minimize adhesion of SiO2 to a sliding ring made of SiC and maintain a stable sealing effect over a long period of time even when the mechanical seal device is used in an aqueous environment such as ultra-pure water or pure water. The present invention provides a mechanical seal device for use in an aqueous environment, in which a fluid to be sealed having a high specific resistance value, such as ultra-pure water or pure water, is sealed by close contact between opposing sliding surfaces of a stationary-side sliding ring made of SiC and a rotation-side sliding ring made of SiC, the rotation-side sliding ring being arranged facing the stationary-side sliding ring, wherein the sliding rings including these sliding surfaces are configured from sintered compacts of a material in which an Al additive is blended with SiC as a parent material, and the specific resistance value of the sliding rings including these sliding surfaces is 100 Ω⋅cm or less.
Inventors:
NAKAMURA KEITARO (JP)
SUZUKI HITOSHI (JP)
OSADA HARUHIRO (JP)
SUZUKI HITOSHI (JP)
OSADA HARUHIRO (JP)
Application Number:
PCT/JP2016/056564
Publication Date:
September 29, 2016
Filing Date:
March 03, 2016
Export Citation:
Assignee:
EAGLE IND CO LTD (JP)
International Classes:
F16J15/34; C04B35/565
Foreign References:
| JP2008025597A | 2008-02-07 | |||
| JP2010173927A | 2010-08-12 | |||
| JPH0569066B2 | 1993-09-30 |
Other References:
See also references of EP 3273119A4
Attorney, Agent or Firm:
SHIGENOBU Kazuo et al. (JP)
Shigenobu Kazuo (JP)
Shigenobu Kazuo (JP)
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