Sealing
gas or through dedicated hydrogen pipelines, presents a variety of technical challenges, especially concerning material compatibility and sealing performance. Hydrogen, being a much smaller molecule than natural gas, requires careful consideration in its transport infrastructure. The following are some of the key challenges specific to selecting sealing solutions in pipeline transport systems:
• Permeation risks: due to its small molecular size, hydrogen poses a higher risk of permeating through seals. To mitigate leakage, it is vital to use sealing materials with low permeability.
• Material degradation: hydrogen embrittlement can progressively weaken metal components. It is recommended that you select sealing components that can resist hydrogen penetration and degradation to uphold pipeline integrity and performance.
Omniseal Solutions collaborates with various valve industry partners and participates in technical committees focused on developing new regulations for hydrogen valves. In response to the
growing trends and industry needs, the company has initiated an ageing test for seven of its Fluoroloy ® materials, ensuring full compliance with the recently introduced Annex M of the API Specification 6D. For more details on API 6D Annex M, you can read the article by Jonathan Geleijns and Matthew Doherty, SLB, titled“ API 6D Annex M-Setting the Standard for Hydrogen Valves” in the December 2024 issue of Valve World magazine.
Method
Soak Media
Soak Pressure
Soak Temperature
Soak Durations
Testing
ISO 23936-1:2022 Edition 2
100 % hydrogen gas phase
42 MPa [ 420 bar / 6091 psi ]
175 ° C, 190 ° C, 205 ° C
7, 14, 28, 42, and 56 days
Tensile, mass / volume, visual
Sealing solutions for a safer & sustainable future
As shown by the above rigorous material testing campaigns, Omniseal Solutions
is committed to supporting the future of energy transition as it translates into a more diversified energy mix. The business will continue to work together with its long-term partners who rely on expertise to develop high-performance, precision-engineered sealing systems that meet the demanding requirements of hydrogen ecosystem and CCUS. By using advanced certified fluoropolymers and thermoplastics materials, safety and reliability of fluid transfer equipment can be ensured.
About the author Christophe Valdenaire has more than 30 years of experience in metal and polymer engineered sealing solutions for the oil and gas valve industry. He is currently Senior Business Development Manager – Alternative Energies at Omniseal Solutions. In this role, he focuses on aligning the Omniseal Solutions’ products and materials offering for hydrogen and its derivatives, CCUS, biofuels and still for traditional oil and gas with strong focus on subsea, floating production, LNG transfer and emission control.
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