This standard test method was prepared to serve as a tool in the evaluation of elastomeric materials for use in the oil field and other energy-related areas where carbon dioxide (CO2) gaseous environments are encountered. This standard presents information on CO2 environment testing under pressures greater than atmospheric pressure at room temperature.< 11 It is intended for use by anyone investigating the use of elastomeric materials in CO2 environments where pressures are low but greater than atmospheric. This standard details a low-pressure, low-temperature comparative test. By using the specified test conditions, data from separate laboratories that utilize this test method may be compared.

No other technical organization is known to have issued a comparable standard test method. This method is useful in conducting research and development of elastomeric vulcanizates. This standard was originally prepared in 1992 by Work Group T-1G-17e of Task Group T-1G-17, a component of Unit Committee T-1G on Protective Coatings, Elastomers, and Other Nonmetallic Materials for Oilfield Use. It was reaffirmed by T-1G in 1998 and is published under the auspices of Group Committee T-1 on Corrosion Control in Petroleum Production. These committees are composed of industry representatives including consumers, producers, and other interested individuals.

1.1 This standard establishes a test method to measure the effect on elastomeric materials subjected to rapid depressurization from elevated pressures in dry CO2 environments. It is designed for testing O-rings or other specimens of elastomeric vulcanizates. This test method is not applicable to the testing of cellular rubber or porous materials.

1.2 This standard recommends procedures for the preparation of test specimens and equipment to be used, the test procedures to be followed, and procedures for reporting results. The results are determined by monitoring changes in physical and mechanical properties as well as changes in appearance after exposure to the selected test media.

Historical Document 1998