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TECHNICAL PAPERS

Sealing Performance of New Gasketless Flange

[+] Author and Article Information
Nao-Aki Noda

Department of Mechanical Engineering, Kyushu Institute of Technology, Kitakyushu 804-8550, Japane-mail: noda@kyutech.ac.jp

Masato Nagawa, Fumitaka Shiraishi

Daiso Corporation, Kitakyushu 804-0061, Japan

Akifumi Inoue

Department of Mechanical Engineering, Kyushu Institute of Technology, Kitakyushu 804-8550, Japan

J. Pressure Vessel Technol 124(2), 239-246 (May 01, 2002) (8 pages) doi:10.1115/1.1464876 History: Received August 16, 2000; Revised November 02, 2001; Online May 01, 2002
Copyright © 2002 by ASME
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References

Home page, http://www.epa.gov/oar/oaq _caa.html
Jun Akagawa, 1972, Seal Technology, 365-369, Kindaihenshusha (in Japanese).
Nikkan-Kogyo Newspaper, Dec. 2. 1998, 37 (in Japanese).
Hiroshi Otsuji, and Nagawa, Masato, Japan patent no. 2849345 (in Japanese); Hiroshi Otsuji and Masato Nagawa, USA patent (soon to appear).
JIS Z 2331-1992 (Reaffirmed 1998), Method of Helium Leak Testing, Sniffer Method, pp. 17–20.
JIS B 2220, 1995, JIS B 2238, 1996.
JPI STANDARD, Pipe Flange for the Petroleum Industry (Addenda-96), JPI-7S-15-93 (Addenda-96).

Figures

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(a) Gasketless flange, and (b) a kind of gasket named superseal
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Dimension of GL flange models
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Experimental equipment for water leak testing
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(a) Finite element mesh, and (b) material property
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Mises equivalent stress σeq (MPa) for (a) gasketless flange, and (b) a kind of gasket named superseal
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Contact length versus clamping force
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Equivalent stress σeq (MPa)—(a) model A (no groove, h=∞ in Fig. 2), (b) model B (h=5 mm in Fig. 2), (c) model C (h=3 mm in Fig. 2), (d) model D (1=8 mm in Fig. 2)
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Experimental equipment for helium leak testing
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Helium leak rate versus internal pressure

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