| 摘要 |
<p>A bung hole lid (32) consists of a cover component (34) surrounding the circumference of the bung hole (22) of a transport drum, and a seal (42) containing a full-halogenated polymer chosen from PTFE and polychlorotrifluoroethylene, preferably PTFE in a weight ratio of 0.8-1, preferably 0.96-0.97. Independent claims are included for the following: (1) transportation drum; and (2) use of full-halogenated polymer for seal of bung hole lid.</p> |
