| 摘要 |
PROBLEM TO BE SOLVED: To provide a cutoff member capable of improving cutoff performance by enhancing contact properties.SOLUTION: A cutoff member has a first cutoff packing (16), a second cutoff packing (23) on which an end face of the first cutoff packing is made to abut, and a base (24) which is arranged on the opposite side of the second cutoff packing from the surface on which the first cutoff packing is made to abut, and can press the second cutoff packing against the first cutoff packing. |
