| 摘要 |
The present invention relates to up-down symmetric upward and downward calking units, which are formed to show much higher bonding power compared to other calking materials by increasing assembly bonding power between plates by the friction and bonding of seven points overlapped with a calking starting area. According to the present invention, a gasket comprising a plurality of plates, which has a symmetric structure, includes an upward calking unit, which is lifted from both ends of a line cut in parallel with a plat part of the plates; and a downward calking unit, which descends from the both ends of the line. The upward and downward calking units are located adjacent to each other. |
