| 摘要 |
PROBLEM TO BE SOLVED: To provide a seal member in which a fall of sealability by aging degradation, heat or the like can be restrained efficiently. SOLUTION: An endless part 31 which is engaged in an engaging groove 29 provided on a lid 24 and a projection 32 which is formed extending to a container body 23 from the endless part 31, are provided. The endless part 31 is provided with a contact surface to be in contact with one surface in the engaging groove 29 and an elastic tube 35 which is in contact with the other surface in the engaging groove 29 elastically to press the contact surface 29 to one surface and seals between the other surface and the endless part. The elastic tube 35 is composed of a protrusion 31B which is in contact with the inner side surface of the engaging groove 29 and a lip part 31C which is provided adjacently to the protrusion 31B and the tip of which is bent to be in contact with the protrusion 31B to form a tubular space in which air is shut up. COPYRIGHT: (C)2005,JPO&NCIPI
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