High-performance Hydrogen Sealing Materials

Trelleborg’s H₂Pro™ range offers solutions across the hydrogen value chain, from production to storage and transport to end use.

Hydrogen plays a critical role in the transition to sustainable energy, both as a fuel source and as a storage medium for surplus energy from renewable sources. Due to its inherent characteristics, it is difficult to seal but the expanding H₂Pro™ range offers reliable solutions for the wide array of applications, including pumps, valves, connectors, and numerous other devices in the hydrogen supply chain.

Two new hydrogen-specific materials:
• H₂Pro™ EBT25, a new EPDM for high-pressure environments across a wide range of temperatures
• Zurcon® H₂Pro™ ZLT, a unique thermoplastic polyeurethane (TPU) for very low temperatures

Supporting the energy, power generation, off-highway, truck and bus, CPI, chemical transportation, and marine industries, all H₂Pro™ materials are validated to key industry standards in a range of challenging conditions typical of hydrogen environments.

Features and benefits of our hydrogen sealing materials

Specifically engineered for hydrogen and fully tested to meet relevant standards and directives
Proven to withstand challenging application environments including resistance to leakage and permeation, high pressures and extreme temperatures, and rapid gas decompression
Excellent application-specific wear and extrusion properties, extending service life while reducing maintenance, replacement and total cost of ownership
Backed by the service of Trelleborg’s sector-leading engineers able to offer custom solutions

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H<sub>2</sub>Pro™ Materials

Our comprehensive portfolio

The H₂Pro™ range of validated materials offers solutions for the entire hydrogen value chain – production, transport and storage, and end use, and includes:

A range of ethylene propylene diene monomer (EPDM) materials for a broad range of application conditions
Fluorocarbon (FKM) which excels in high-temperature environments
Silicone compounds offering a wide service temperature range
Polyurethane (PU) grades ideal for extreme wear and durability applications
Thermoplastic compounds for excellent performance in cryogenic and liquid hydrogen sealing
Metal grade for ultimate static sealing

Validating Materials

Proven Compounds for Tough Hydrogen Environments

Trelleborg continues to push the boundaries of hydrogen sealing validation by creating proprietary test programs to prove the performance of the H₂Pro^TM range. Leveraging our industry leading R&D capabilities, we use existing and enhanced versions of accepted standards, adapted to real-world hydrogen application conditions in advanced testing rigs.

H₂Pro^TM materials are tested for:

Oxygen Aging (according to ASTM D572 or ISO 188)
Ozone Aging (according to ISO 1431-1)
Hydrogen Compatibility and Rapid Gas Decompression (RGD) (based on a proprietary version of a ISO 17268)
Permeation (based on ISO 2782-1)
Endurance Validation (based on a proprietary version of ISO 19880-3, UN ECE R134, EC79, ISO 12619-2, CSA ANSI HGV 3.1, ISO 17268 & SAE J2600)