US Patent 9337571 Sealing member and sealing structure

A sealing member configured to be installed to an outer peripheral surface of a first connector housing among a pair of connector housings seal so as to seal a gap between an outer peripheral surface of a first connector housing and an inner peripheral surface of a second connector housing is provided. An inner peripheral surface of the sealing member is formed with protrusions and grooves which are aligned with a first wavelength in an axial direction of the sealing member. An outer peripheral surface of the sealing member is formed with protrusions and grooves which are aligned with a second wavelength in the axial direction. The first wavelength is equal to or smaller than the second wavelength. Positions of the protrusions of the inner peripheral surface are shifted from positions of the protrusions of the outer peripheral surface in the axial direction.