This seal (1) comprises a pipe (2) integral with said seal (1) and running parallel to the longitudinal direction of this seal (1). This pipe (2) is part of the moulding comprising said seal (1) and may be placed either on the outside or on the inside of this seal (1), which consists of a shoulder (10) and a lip (11), the pipe (2) being integral with the shoulder (10). The invention applies to any seal situated close to a supply pipe in a motor vehicle. <IMAGE>
