Before the liquid fill and drain coming out (first state) with, fits to the large diameter section of the gasket itself component is strong to the cylindrical body of the elastic body ring condition component which by the fit where, sufficient airtightness and liquid dense characteristic are maintained, in addition, the elastic body ring condition component from the large diameter section of the gasket itself component the small diameter section they fit to the position where it is made to slide is in a state where at the time of the liquid fill and drain coming out which (second state) with, fits to the small diameter section of the gasket itself component fit power to the cylindrical body of the elastic body ring condition component which, before the liquid fill and drain coming out (firstWith small thing, it decreases also the potensiometer of the gasket for the cylindrical body state) with in comparison, as a result, while airtightness and liquid dense characteristic are maintained it is possible to offer the medical application container which includes the gasket which can reveal the sliding characteristic which is superior.液体注排出前(第一の状態)では、ガスケット本体部材の大径部に嵌合された弾性体リング状部材の円筒体への強い嵌合により、充分な気密性及び液密性が維持され、また、弾性体リング状部材をガスケット本体部材の大径部から小径部と嵌合される位置まで摺動させた状態である液体注排出時(第二の状態)では、ガスケット本体部材の小径部に嵌合された弾性体リング状部材の円筒体への嵌合力が、液体注排出前(第一の状態)に比べ小さいことで、円筒体に対するガスケットの摺動抵抗も低減し、この結果、気密性及び液密性を維持したまま優れた摺動性を発現できるガスケットを含む医療用容器を提供することが出来る。
