| 摘要 |
<P>PROBLEM TO BE SOLVED: To easily spread a sealing material over the whole inside of a cap body. <P>SOLUTION: A bellows 9 is formed in a cylindrical part 3 of a cap body 7. Thereby, the cap body 7 can be easily compressed and deformed in an axial direction, and when the cap body 7 covering an external exposed part (for example, a screw head) of a fastening member is compressed and deformed, a sealing material 13 preliminarily filled into the cap body 7 is easily spread over the inside of the cap body 7 during the cap body 7 is compressed and deformed. <P>COPYRIGHT: (C)2012,JPO&INPIT |
