| 摘要 |
PURPOSE:To improve a leakage preventing function by specifying the internal angle of the flectionally cross-sectioned steel belt of a vortex gasket used for airtightness between a water gauge body and a cover plate. CONSTITUTION:The penetration member 3 of a multiport water gauge is constituted by arranging a vortex gasket 9, a metallic gasket 10, mica fading 11, a glass plate 12, a side gasket 13, protection mica 14, and a buffer gasket 15 successively from the side of a main body 1a. The vortex gasket 9 is positioned between the port seat of the main body 1a and the metallic gasket 10 to hold the airtightness against vapor. The flectionally cross-sectioned steel belt of the vortex gasket 9 has an about 50 deg. internal angle. |
