Seal structure for pressurized container, cooling treatment apparatus, multi-chamber heat treatment apparatus, pressure regulating method, and operating method

摘要

This shaft seal structure has at a fitting portion between a container wall of a pressurized container in which high pressure gas is enclosed and a rotating shaft that passes through the container wall: O-rings that are disposed at least two locations in the axial direction of the rotating shaft; and grease that is pressurized.