Test of Seal System for Flexible Pipe End Fitting

Lars Banke, Thomas Gregers Jensen

    Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review


    The purpose of the end fitting seal system is to ensure leak proof termination of flexible pipes. The seal system of an NKT end fitting normally consists of a number of ring joint gaskets mounted in a steel sleeve on the outside of the polymeric inner liner of the pipe. The seal system is activated by compression of the gaskets, thus using the geometry to establish a seal towards the inner liner of the pipe and the steel sleeve of the end fitting. This paper describes how the seal system of an end fitting can be tested using an autoclave. By regulating temperature and pressure, the seal system can be tested up to 130oC and 51.7 MPa. Pressure, temperature and the mechanical behaviours of the pipe are measured for use in further research. The set-up is used to test the efficiency of the seal system as function of parameters such as cross sectional shapes of the gaskets, tolerances between gaskets and inner liner, number of gaskets, surface roughness and gasket material.
    Original languageEnglish
    Title of host publicationOMAE'99
    Publication date1999
    Publication statusPublished - 1999
    Event18th International Conference on Offshore Mechanics and Arctic Engineering - St. John's, Canada
    Duration: 11 Jul 199916 Jul 1999
    Conference number: 18


    Conference18th International Conference on Offshore Mechanics and Arctic Engineering
    CitySt. John's

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