DuPont announced that DuPont™ MOLYKOTE® HP-300 Grease has successfully met rigorous H₂ purity standards in accordance with ISO 14687:2019.

In collaboration with HyCentA Research GmbH, MOLYKOTE developed an innovative lubricant testing protocol aligned with these standards. The grease underwent several weeks of exposure to H₂ at a pressure of 700 bar, followed by a H₂ gas and particle contamination analysis. The results showed MOLYKOTE HP-300 did not significantly contaminate H₂, ensuring compatibility with critical H₂ applications such as fuel cell stacks. This achievement marks a significant step forward in advancing H₂ technologies.

Pure H₂ can be easily contaminated by any material with which it comes into contact, including lubricants. This necessitates critical testing to ensure purity for safety and performance. For H₂ grades used in transportation applications, certain impurities with concentrations even as low as 4 parts per billion have the potential to compromise the integrity of the fuel cell. This rigorous assessment supports MOLYKOTE HP-300 as a potential lubricant solution for H₂-exposed components in applications such seal and threaded connections, reducing contamination risk while maintaining the integrity of critical parts. The grease's performance in extreme conditions helps to support safe and reliable H₂ storage and transportation and use of H₂ as a next generation fuel.

In addition to its ability to help maintain H₂ purity, MOLYKOTE HP-300 helps to enable resistance against H₂ and many chemicals while providing excellent low temperature (−40°C) performance, critical for applications such as vehicle refueling. It does not support H₂ embrittlement and is compatible with a wide range of substrates including most elastomers and plastics.

By reducing the risk of contamination in H₂ systems, DuPont is helping to advance cleaner energy solutions. MOLYKOTE HP-300 grease is a well-suited solution that meets the stringent demands of the H₂ energy industry.