Abstract: A cover for attachment to a cylindrical plastic drum, the drum having an open top end and a closed bottom end and an inside and an outside, the drum having a lifting flange on the outside thereof adjacent to the top end of the drum, the cover including a circular lid having a channel means integrally molded therewith extending around the periphery thereof for receiving the top end of the drum, the channel means having a downturned portion and a horizontal portion integrally molded together, the downturned portion being adapted to contact the outside of the top end of the drum and the flange, the downturned portion being thicker than the horizontal portion to form a tight seal with the outside of the drum when placed on the drum and connected to the drum by a locking ring.

Abstract: A plastic drum assembly includes a plastic body with an open top, terminated in a neck having two annular flexing zones, a plastic cover, and a ring for securing the cover to the body. The cover may also have flexing regions corresponding to the flexing regions on the neck. The flexing regions cooperate to permit the neck and the cover to flex in a hinging action in presence of an impact on the body to insure that the cover is not separated, thereby preventing spillage.