Patent ID: 8393911

Claim:
A water seal plug, which is arranged around an electric wire and inserted into a terminal receiving section of a connector housing of a connector so as to seal watertightly between an outer surface of the electric wire and an inner surface of the terminal receiving section, the connector having a terminal having an electric connecting portion connected with a mating member at one end of the terminal so as to be placed on the mating member and fastened by a fastening member and a wire connecting portion joined with a terminal end of the electric wire at the other end of the terminal, and the connector housing having the terminal receiving section receiving the terminal and the electric wire joined with the terminal movably along a radial direction of the electric wire parallel to a direction of fastening by the fastening member, the water seal plug comprising: a cylindrical main body passing the electric wire therethrough; and a water seal member made of elastic material, having an ring-shape outer lip projecting from an outer surface of the main body and abutting on an inner surface of the terminal receiving section; and a plurality of ring-shape inner lips projecting from an inner surface of the main body and abutting on an outer surface of the electric wire, wherein at least one of the plurality of inner lips has a lower projecting height from the inner surface of the main body than that of the other inner lips, wherein the inner lip at the nearest position to the terminal from among the plurality of inner lips is formed to have a lower projecting height from the inner surface of the main body than that of the other inner lips.