O-Ring Compatibility Testing in Hydrogen Environments

This document is a technical report detailing the testing of O-rings for compatibility with hydrogen environments, specifically for applications in green hydrogen production projects. National Oilwell Varco (NOV) engaged Cetim to conduct a series of tests to evaluate the performance of their O-rings under conditions simulating hydrogen exposure. The testing involved subjecting the O-rings to high-pressure hydrogen in an autoclave at 150 bar and 60°C for 21 days, followed by rapid gas decompression cycles. The objective was to assess the mechanical and thermal properties of the O-rings after exposure to hydrogen. The results indicated no visible damage, such as blisters or cracks, after the tests, suggesting promising material behavior in hydrogen environments. The report emphasizes Cetim's capabilities in conducting such specialized tests and analyzing the results, highlighting their expertise in material failure mechanisms relevant to hydrogen applications.