Abstract: (Subject) The aim is to provide a tube end connector which connects a first tubular member and a second tubular member while securing sealing performance. (Solving Means) The tube end connector according to the present invention is provided with a band spring 4b which covers both outer surface of an end portion of a zeolite membrane covered ceramic tube 1 and outer surface of an end portion of a metal tube 5 in conditions of connecting the end portion of the zeolite membrane covered ceramic tube 1 and the end portion of the metal tube 5; and a fluorine elastomer 3b which is placed at the region between the band spring 4b and the outer surfaces both of the zeolite membrane covered ceramic tube 1 and the metal tube 5, and which has elasticity.