Waterproof connector sealing member and waterproof connector

A waterproof connector comprising:

• a housing that accommodates contacts;
• and
• a sealing member that is disposed on the side of the contact insertion surface of the housing,
• the sealing member having a flat plate-shaped sealing main body with a plurality of electrical wire insertion holes that extend between the two main surfaces of the sealing main body, a plurality of projecting ribs provided on the inner wall surface of each of the electrical wire insertion holes, and the projecting ribs of each electrical wire insertion hole, the being provided in different positions with respect to the projecting ribs of its adjacent electrical wire insertion hole along the axial direction of the electrical wire insertion holes, wherein
• relief grooves are formed in the sealing main body in positions between the electrical wire insertion holes in the vicinity of the outer edges of the sealing main body and the outer edges, the outer edges having projecting ribs formed thereon, with each relief groove extending from one of the main surfaces that is closer to the projecting rib of the adjacent electrical wire insertion hole provided toward the outside in the axial direction.