SEALING STRUCTURE

PROBLEM TO BE SOLVED: To provide a sealing structure that allows an opening part of a housing body housing a liquid fluid to be easily opened and closed while securing water tightness for preventing leakage.SOLUTION: In the sealing structure S, the housing body 1 housing a liquid fluid 9 is formed of a circumferential wall 2 having flexibility, and the opening part 5 for removing the liquid fluid housed in the housing body is closed in an openable manner. The sealing structure is provided with a Hook-and-Loop fastener part 12 for holding the opening part. The Hook-and-Loop fastener part is provided with a pair of pressing surface parts 13 and 13 for pressing an overlap portion 7 formed by stacking and flatly expanding the circumferential wall of the opening part so that the opening part is closed with water tightness over the entire length. The pair of pressing surface parts 13 include magnets 19 with substantially flat facing surfaces 19a to be attracted to each other and holding parts 18 holding the pressing surface parts so that the magnets can be separated from each other, which are connected by a connection part 21 so as not to be separated from each other.