GROMMET

Provided is a grommet that can improve the water-blocking property. A grommet includes an opposing portion that opposes a portion surrounding a mounting hole in a vehicle body panel , a first water-blocking portion that extends from the opposing portion and comes in contact with the vehicle body panel , and a second water-blocking portion that extends from the opposing portion and comes in contact with the vehicle body panel . Each of the first water-blocking portion and the second water-blocking portion is formed in an annular shape that surrounds the mounting hole . The second water-blocking portion is provided on the outer circumferential side with respect to the first water-blocking portion