| 摘要 |
PROBLEM TO BE SOLVED: To ensure airtightness between a container body and a lid to be put over a cylindrical port of the container body by making the cylindrical port integrally molded with a resin container through an upper cylindrical port of a metallic container protrude, and by fastening and holding an inner lid put over the cylindrical port by a pressing cap to be screwed onto an outer peripheral face of the cylindrical port. SOLUTION: An inner lid 7 is put over an opening end of a cylindrical port 6, then a pressing cap 18 is screwed onto a threaded part 6a on an outer periphery of the cylindrical port 6, and a flange 7e of the inner lid 7 is pressed by an inward flange 18a. Thus the flange 7e is fastened against an end face of the cylindrical port 6 while compressing a sealing O-ring 17, thereby sealing the inside of a resin container 2 by the inner lid 7. Subsequently, a pressing ring 21 is passed over a stud bolt 23 screwed into a bolt hole 8a of a bolt standing ring 8 via an attaching hole 22, and an outward flange 18c is interposed between circular stages 21a, 8b. Then a nut 24 is screwed onto the stud bolt 23 protruding from an upper face of the pressing ring 18 via a spring washer or the like for fastening. |
