GASKET

PROBLEM TO BE SOLVED: To elongate a life while maintaining seal performance compared with a conventional gasket.SOLUTION: A gasket attached between an opening of a first member and an opening of a second member comprises: a first gasket baseboard which has a first bead progressing along a first opening part which is formed in response to the opening of the first member, and salient toward a side of the first member, and is arranged at the side of the first member; a second gasket baseboard which has a second bead progressing along a peripheral edge of a second opening part which is formed in response to the opening of the second member, and salient toward a side of the second member, and is arranged at the side of the second member; and an intermediate baseboard arranged between the first gasket baseboard and the second gasket baseboard. The intermediate baseboard has a penetration hole which is formed along a longitudinal direction of the first bead and the second bead, and composed of a prescribed width and a prescribed length in a portion corresponding to the first bead and the second bead.SELECTED DRAWING: Figure 1 【課題】従来に比してシール性を維持したまま長寿命化を可能とする。【解決手段】第１部材の開口と第２部材の開口との間に挟着されるガスケットであって、第１部材の開口に対応して設けられた第１開口部の周縁に沿って、かつ、第１部材の側に向かって隆起した第１ビードを有し、第１部材の側に配置される第１ガスケット基板と、第２部材の開口に対応して設けられた第２開口部の周縁に沿って、かつ、第２部材の側に向かって隆起した第２ビードを有し、第２部材の側に配置される第２ガスケット基板と、第１ガスケット基板と第２ガスケット基板との間に配置される中間基板とを備え、中間基板は、第１ビードおよび第２ビードと対向する部分に当該第１ビードおよび当該第２ビードの長手方向に沿って形成された所定の幅および所定の長さからなる貫通孔を有する。【選択図】図１