This standard establishes a test method to measure the ability of elastomeric materials to withstand static exposure to vapor phase sour gas environments (e.g., gaseous hydrocarbons with hydrogen sulfide [H2S]) at elevated pressure. This test method is not designed to be an immersion or a functional test. It is designed for testing standard O-rings or test specimens of elastomeric vulcanites cut from standard sheets (see ASTM D31822). This test method is not applicable to testing cellular rubber or porous materials.
NACE TM0187-2011
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Standard Test Method – Evaluating Elastomeric Materials in Sour Gas Environments
National Association of Corrosion Engineers , 06/18/2011