US Patent 10243335 Water-proofing member

A water-proofing member includes a pair of elastic tubular connection portions and individually connected in an air-tight manner to a connector (housing member) and a corrugated tube (housing member) housing an electrical wire; an elastic tubular insertion portion that surrounds the electrical wire in a mode of connecting the pair of tubular connection portions and to each other; an elastic pipe-shaped extension portion that can be deformed such that its axis is curved, and extends and branches from the outer circumferential surface of the insertion portion; and an air-permeable film that is attached to an extension end portion of the pipe-shaped extension portion.