Abstract: A sales jug of thermoplastic material has a sealing lid (14) which is secured by a very firm snap locking engagement with a groove (6) in the edge portion of the jug, while the lid (14) is adapted to be opened by means of a rupture arrangement inside the snap locked edge portion (18) thereof. For stabilizing the locking engagement the lid is provided with an upstanding edge flange (24), which is rested laterally against a corresponding upper and outer annular flange portion (8) of the jug. The upstanding edge flange (24) of the lid is extended outwardly and downwardly about the top edge of the said annular flange (8) of the jug, whereby this flange (8) is stabilized against a release of the snap lock arrangement. The outermost portion (28) of the extended lid edge flange (24) serves to hold a skirt portion of a reclosing lid (42).