Gasket and sealing structure
    2.
    发明专利

    公开(公告)号:JP5365484B2

    公开(公告)日:2013-12-11

    申请号:JP2009272625

    申请日:2009-11-30

    CPC classification number: F16J15/3204 F16J15/024 F16J15/062

    Abstract: 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.

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