| 摘要 |
PURPOSE:To obtain a vacuum seal with high reliability by installing a seal plug on the end part of a gasket interposed between a pair of T-shape part forming flanges. CONSTITUTION:A gasket 36 is interposed in between a first joint surfaces, or the mutual joint surfaces of T-shape divided parts and/or a pair of T-shape part forming flanges 31, 32 in the T-shape divided parts. One end of a seal plug 41 is connected to the end part of the gasket 36 and the seal plug 41 is embedded and fixed in a second joint surface which is the joint surface of the pair of T-shape part forming flanges 31, 32 relative to another flange, etc., in such a way that the other end of the seal plug 41 is flush with the second joint surface. By this structure, a vacuum seal with high reliability can be obtained.
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