A connector (1) includes connector terminals (2), an insertion portion (3) having the connector terminals (2) inserted therethrough, a first mounting portion 4A formed on a first side of the insertion portion (3), and a second mounting portion (4B) formed on a second side of the insertion portion (3). The second mounting portion (4B) is mounted on an outer periphery of a second female connector (5B) via a sealing member (41) for waterproofing. A first material constituting the first mounting portion (4A) and a second material constituting the second mounting portion (B) are different materials. The second material has higher adhesion to the sealing member (41) than the first material when being kept in contact with the sealing member (41) in a heated environment.