An improved coating apparatus including a paint vessel having an opening at its bottom for passing of an object to be coated therethrough, a sealing member disposed below the opening of said paint vessel and having an opening for passing of the coating object therethrough, a supporting section for supporting the paint vessel and a driving section for moving the paint vessel relative to the object to be coated. The sealing member has a brush to be in contact with the coating object passing through its opening and an elastic member provided exteriorly of the brush for pressing the brush against the object.