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TECHNICAL PAPERS

Sealability of Stationary Metal-to-Metal Seals

[+] Author and Article Information
G. R. Murtagian, V. Fanelli, J. A. Villasante, D. H. Johnson, H. A. Ernst

Mechanical Technology Department, TENARIS-Siderca Center for Industrial Research, Dr. Simini 250, 2804, Campana, Buenos Aires, Argentina

J. Tribol 126(3), 591-596 (Jun 28, 2004) (6 pages) doi:10.1115/1.1715103 History: Received February 13, 2003; Revised October 24, 2003; Online June 28, 2004
Copyright © 2004 by ASME
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References

Figures

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Schematic of a stationary metal-to metal seal on a tubular connection
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Typical pressurization (solid)/depressurization (hollow) LR curves for different Fn values. First test repetition.
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Iso-leakage curves in an Fn vs. Pgas plot for a leakage threshold level of 0.1 ml/hr, and leakage level of 30 ml/hr. Shift in the leakage curves due to surface load history.
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Seal surface aspect. Before test (left) and after
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Typical leakage curves obtained for test with use of SC
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Modeled Pc vs. normal applied force. R is a parameter.
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Leakage threshold data for a given Pgas on samples with use of SC. R indicated in ( ).
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Leakage threshold data for a given Pgas on samples without use of SC. R indicated in ( ).
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Example of a seal composed of three seal cells
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Family of Wac leakage threshold curves as a function of Pgas. Tests with SC.
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Sealability critical curve with use of SC
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Sealability critical curve without use of SC
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Example of P(l) profiles obtained by FEA for actual connections under different load cases
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Comparison between full-scale tests result and FEA with sealability model prediction

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