Grommet and wire harness using the same

A grommet comprising:

• a body portion configured to divide an inside and an outside of a mounting member;
• an electric wire insertion portion extending from the body portion toward the outside of the mounting member and configured to insert an electric wire;
• a seal portion provided at an outermost position of an end of the electric wire insertion portion to be in close contact with an outer circumference of the electric wire,
• wherein the seal portion comprises a projected rim formed continuously on the outer circumferential surface of the electric wire insertion portion to ensure pressured contact between the inner circumferential surface of the seal portion and the outer circumferential surface of the electric wire;
• and
• a protective portion disposed on the end of the electric wire insertion portion at the outermost position of the electric wire insertion portion where the seal portion is provided and configured to extend from the end of the electric wire insertion portion at the outermost position of the electric wire insertion portion away from the body portion along a length direction of the electric wire insertion portion and to cover an outer circumference of the electric wire exposed from the seal portion, wherein
• the protective portion has the outside diameter on an opposite side of a seal portion side set smaller than the outside diameter on the seal portion side,
• the protective portion has a wall thickness that continually decreases from the seal portion side to the opposite side of the seal portion side, and
• the electric wire insertion portion has a constant wall thickness that is greater than the wall thickness of the protective portion anywhere from the seal portion side to the opposite side of the seal portion side.