Abstract: A spring member made by a simplified working process in which mistakes in assembling work are prevented, a liquid cartridge using the spring member, and a recording apparatus with the liquid cartridge are provided. A particular member of a spring member 1 is configured as a cap body 3 having an opening toward an elastic member and a sealing surface 3a at an end. An edge portion the opening is integrated with the elastic member 2. The cap body 3 includes a protruding piece 39 that protrudes from the edge portion of the opening of the cap body 3 toward the elastic member 2.