[ sealing ]
A well-informed approach to material selection is crucial for achieving leak-tight performance, preventing system failures, and enhancing the overall efficiency of hydrogen transportation.
Polymer spring-energized seals & metal seals
Advancements in materials science help mitigate hydrogen embrittlement while enhancing durability and safety. Ongoing innovation addresses both current and future hydrogen transport challenges, including the development of hybrid sealing solutions that combine metal and polymer technologies for improved reliability.
Hydrogen has already emerged as a viable clean energy source for transport, fuel cells, electrolyzers, and power generation. It also plays a role in industries such as aviation, space propulsion, nuclear energy, semiconductor manufacturing, and industrial chemical processing. Collaboration across these sectors supports the development of sealing solutions that enhance performance, safety, and efficiency in hydrogen applications.
Polymer-based sealing solutions Fluoropolymers are commonly employed in hydrogen applications due to their flexibility and versatility in different sealing environments. Many engineering and manufacturing companies worldwide rely on fluoropolymers to support sustainability goals and energy circularity. These materials are particularly valued for: 1. Low friction, making them highly effective in dynamic applications such as valve stems, pumps, and compressors, where continuous motion and pressure variations are prevalent.
2. Fluoropolymers also provide excellent mechanical and chemical stability, as well as durability – significant because a major challenge for these materials is hydrogen permeation, which can result in gradual leaks and diminished sealing efficiency, especially under high-pressure scenarios.
Material characteristics & performance requirements
Once the sealing conditions and challenges of each hydrogen transport method are understood, the next critical step is selecting the appropriate sealing technology. This choice is essential for ensuring safe and efficient hydrogen transport across all delivery methods. The selection process involves reviewing key material characteristics and performance requirements of both polymer and metal sealing solutions, particularly their ability to manage permeation, wear resistance, and long-term reliability under hydrogen exposure.
Rulon ® fluoropolymers
Hydrogen Tech World | Issue 21 | April 2025 57