Device for packaging and dispensing a product having an improved sealing between two containers

Device (10) for packaging at least one product and dispensing at least said product on a surface and comprising at least one container (12) delimiting a product cavity (22) containing said at least one product and a dispensing member (14) mounted on said at least one container (12) and having a first dispensing orifice (24b) in flow communication with the product cavity (22), said container (12) having a neck (18) allowing access to the product cavity (22), said dispensing member (14) comprising a dispensing duct (24) in flow communication with the product cavity (22), an assembly skirt (30) radially surrounding said dispensing duct (24) and an annular sealing lip (32) radially disposed between said dispensing duct (24) and said assembly skirt (30), said annular sealing lip (32) bearing radially against a sealing portion (18c) of the neck (18) of the container (12), characterized in that said sealing portion (18c) is located axially away from an opened end of the neck (18), wherein the sealing portion (18c) of the neck (18) is a portion extending radially inwardly from an inner surface of an upper portion (18d) of the neck (18) and wherein the upper portion (18d) of the neck (18) of the lower container (12) has an inner diameter that is larger than an outer diameter of the annular sealing lip (32) of the upper container (14).