| 摘要 |
The lid (4) is fastened to the neck of the flask by a hinge (9-11) and locked closed by a click fastener (5-7). Part (11) of the hinge is injection moulded integrally with the body of the flask. A gas-tight seal is formed between the rim (18) and O-ring (19). A foil (21) is removed before first use. |
