STP1267

    The Seal Configuration Tester, a New Approach to the Evaluation of Elastomeric Materials for Oxygen Service

    Published: Jan 1995


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    Abstract

    A new approach for evaluating elastomeric materials for use in high pressure oxygen has been developed. Because this approach replicates the dynamic forces that occur in pressure systems and subjects a specimen to progressive wear, it allows the user to compare wearability and oxygen sensitivity. This method determines if a candidate material ignites before it mechanically fails and provides a relative wearability ranking for that material.

    Existing mechanical impact test methods produce data which is useful in screening various materials for oxygen sensitivity. The pass/fail data produced from these tests do not easily translate into a suitable material selection for a particular oxygen application. This new evaluation technique produces both mechanical wear data in combination with sensitivity data which can easily be applied when selecting elastomeric materials for a particular oxygen application.

    An explanation of the process as well as sample data are presented.

    Keywords:

    oxygen, ignition, compatibility, pressure, wearability, elastomeric materials


    Author Information:

    Haselmaier, LH
    Project Engineer, Johnson Controls World Services, NASA, John C. Stennis Space Center, MS

    Powell, BA
    Engineer, Johnson Controls World Services, NASA, John C. Stennis Space Center, MS


    Paper ID: STP16423S

    Committee/Subcommittee: G04.02

    DOI: 10.1520/STP16423S


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