Seal structure for cooling treatment apparatus or multichamber heat treatment apparatus, and for the seal structure, method of pressure regulation and method of operating

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.