Title:
シール構造およびシール方法ならびにこのシール構造を備えた継手
Document Type and Number:
Japanese Patent JP7141705
Kind Code:
B2
Abstract:
Provided are a seal structure in which sealing performance is ensured over a long period of time even when it is used for low-temperature fluids, a sealing method, and a coupling including the seal structure. The seal structure includes an annular gasket interposed between a first member and a second member. The first member is provided on its surface facing the gasket with: a first surface located on the inner diameter side; a first annular protrusion located on the outer diameter side of the first surface; a second surface located on the outer diameter side of the first protrusion; a second annular protrusion located on the outer diameter side of the second surface and having a greater protruding amount with respect to the second surface than that of the first protrusion; and a third surface located on the outer diameter side of the second protrusion.
Inventors:
Koji Hiramatsu
Yamaji Michio
Kunihiko Odo
Yakushigami Tadayuki
Yasumasa Yanagida
Takashi Funakoshi
Yamaji Michio
Kunihiko Odo
Yakushigami Tadayuki
Yasumasa Yanagida
Takashi Funakoshi
Application Number:
JP2018547741A
Publication Date:
September 26, 2022
Filing Date:
October 26, 2017
Export Citation:
Assignee:
Fujikin Co., Ltd.
International Classes:
F16J15/06; F16L19/03
Domestic Patent References:
| JP2001516862A | ||||
| JP2015175518A | ||||
| JP201090939A | ||||
| JP200974619A | ||||
| JP201614468A |
Attorney, Agent or Firm:
Naoto Matsumura
Akira Watanabe
Akira Watanabe