This standard sets forth procedures to measure the ability of elastomeric materials to withstand static exposure to sour liquid environments (e.g., hydrocarbon, water, or mixtures of each with hydrogen sulfide [H2S]) at elevated pressure and temperature, and is not designed to be a functional test. It is designed for testing O-rings or specimens of elastomeric vulcanizates cut from standard sheets in accordance with ASTM D 3182. This standard is not applicable to the testing of cellular rubber or porous compositions.

This standard sets forth procedures for the preparation of test specimens and equipment to be used, the test procedures to be followed, and procedures for reporting results. This standard also discusses test conditions, test environment, and reagents. Specifically, this standard specifies conditions of temperature, exposure time, and pressure for the exposure of test specimens to the influence of a sour liquid environment that contains H2S, carbon dioxide (CO2), methane (CH4), water, and liquid hydrocarbon. The test results are determined by monitoring changes in physical and mechanical properties (i.e., mass, volume, compression set, hardness, tensile strength, ultimate elongation, and modulus), as well as change in appearance after exposure to the selected test environment.

The precision of this test method and reproducibility within and among laboratories has not been established. Specimens being tested using this method may be different in performance or alike within test error. The user of this standard is encouraged to establish statistical significance of the data resulting from using this test method.

In view of the wide range of service conditions, this standard is intended only to provide a means of initial material evaluation and comparison. The test results are not intended to provide any direct correlation with service performance. This standard is useful in conducting research and development of elastomeric vulcanizates.

SAFETY PRECAUTIONS: H2S is an extremely toxic gas that must be handled with care. See Appendix A for safety considerations and information on toxicity of this gas.

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