SEAL MEMBER, SEAL MEMBER INCORPORATED DEVICE, AND SEAL MEMBER ATTACHMENT/DETACHMENT METHOD

To provide a seal member which is easy in surely sealing a clearance between two mechanism parts by securing connection rigidity between end faces, a seal member incorporated device incorporated with the seal member, and a seal member attachment/detachment method.SOLUTION: An orthogonal cross section CS orthogonal to a length direction of a seal member 1 comprises: a fit-in holding part 10 fit into an attachment groove part, and held at a first mechanism part; a push-press operation part 12 protruding in a circular arc shape toward a second mechanism part at a side apart from the fit-in holding part 10, and push-pressed to the second mechanism part; and a connecting part 14 for connecting the fit-in holding part 10 and the push-press operation part 12. The fit-in holding part 10 has a fit-in rectangular shape 10s which is fit in along the attachment groove part. The push-press operation part 12 has a rectangular base part 12b at a side of the connecting part 14, and a circular-arc part 12c continuing to the base part 12b at a side of the second mechanism part. The base part 12b is smaller than the fit-in rectangular shape 10s in a width direction DW, and a constriction part 15 is formed into a symmetrical circular arc which is symmetrically recessed toward the inside in the width direction DW.SELECTED DRAWING: Figure 2 【課題】端面間の連結強度を確保して２つの機構部の間を確実に密封しやすいシール部材、このシール部材を内蔵したシール部材内蔵装置、シール部材着脱方法を提供する。【解決手段】シール部材１の長さ方向と直交する直交断面ＣＳは、装着用溝部に嵌め込まれ第１機構部に保持される嵌め込み保持部１０と、嵌め込み保持部１０から離れた側で第２機構部に向けて円弧状に突出して第２機構部に押し当てられる押し当て作動部１２と、嵌め込み保持部１０と押し当て作動部１２とを連結する連結部１４と、を備え、嵌め込み保持部１０は、装着用溝部に沿って嵌め込まれる嵌め込み矩形１０ｓを有し、押し当て作動部１２は、連結部１４の側に矩形状の基台部１２ｂと、第２機構部の側に基台部１２ｂに続く円弧部１２ｃとを有し、幅方向ＤＷにおいて基台部１２ｂは嵌め込み矩形１０ｓより小さく、くびれ１５は、幅方向ＤＷにおいて対称に内側へ向けて凹んだ対称円弧である。【選択図】図２