GASKET AND SEAL STRUCTURE

WIPO Patent Application WO/2011/065241

A1

Provided are a gasket and a seal structure, which can exhibit a sealing property without being affected by the state of a contact surface of an attached object. A plurality of lip portions (3) which are brought into contact with a groove bottom surface (42) of a groove (41) of one of members to which a gasket (1) is attached or one of the surfaces of the other member, to form a seal surface, are provided. A recessed portion (3a) is formed between the lip portions (3). When the compression direction is defined as the height direction, and the direction in which both side surfaces of the groove are opposed is defined as the width direction, in sections along the height direction and the width direction of the gasket (1), the area which forms the sealing surface in conjunction with the groove bottom surface (42) or the other of the surfaces of the other member among the profiles in the sections, is shaped into a arciform portion (2) composed of a curved line projected toward the other surface, before the gasket (1) is compressed between the two members. The radius of curvature (ra) and the section width (d0) of the arciform portion (2) satisfy 0.75≤ra/d0≤2.0.

WATANABE TAKESHI (JP)
HONDA SHIGENOBU (JP)
SATO HIROAKI (JP)

PCT/JP2010/070210

June 03, 2011

November 12, 2010

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NOK CORP (JP)
WATANABE TAKESHI (JP)
HONDA SHIGENOBU (JP)
SATO HIROAKI (JP)

F16J15/06

JPS397615Y1
JP2002364753A	2002-12-18
JPH06272765A	1994-09-27
JP2001113404A	2001-04-24

SERA Kazunobu et al. (JP)
Kazunobu Sera (JP)

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