Greene Tweed launches PFAS-free seal material for hydrogen and CCUS

Greene Tweed has introduced EPM 893, a PFAS-free ethylene propylene sealing compound for hydrogen and carbon capture, utilization and storage applications. The material is designed to handle low temperatures, rapid gas decompression and harsh process media as operators scale infrastructure.

Why it matters: - Hydrogen and CCUS systems need seals that can handle high pressure, rapid cycling and aggressive media without cracking, blistering or losing elasticity. - EPM 893 is designed to reduce sealing tradeoffs while eliminating PFAS, which matters as manufacturers face more pressure to rethink materials. - The material targets infrastructure where seal failure can drive leaks, downtime and maintenance costs.

What happened: - Greene Tweed announced EPM 893, a PFAS-free ethylene propylene compound for hydrogen and CCUS service. - The company positioned the material for hydrogen refueling systems, valves, instrumentation, mechanical seals, underground storage, CO₂ compressors, pumps and pipeline infrastructure. - Greene Tweed also said the material is part of its energy transition solutions portfolio.

The details: - EPM 893 supports continuous operating temperatures down to -60°C (-76°F). - The compound has a typical service temperature range of -67°C to 150°C (-89°F to 302°F). - Greene Tweed says the material demonstrated rapid gas decompression resistance in hydrogen and supercritical CO₂ environments at pressures up to 200 bar (2,900 psi). - The material is tested in 100% hydrogen, supercritical CO₂, oxygen service and amine-based carbon capture environments. - Greene Tweed says EPM 893 was tested in accordance with ISO 23936-2, ISO 17268/SAE J2600 and NACE TM0192 requirements. - The company says EPM 893 achieves complete elimination of PFAS. - The material will be available as O-rings, GT® Rings and custom-molded shapes. - Those formats are intended for valves, instrumentation, mechanical seals, storage systems, compressors and CO₂ transport infrastructure.

Between the lines: - Greene Tweed is betting that hydrogen and CCUS buyers will value material reliability as much as system-scale performance targets. - The launch also reflects a broader market shift toward PFAS-free alternatives without giving up low-temperature or chemical performance. - Charles Burke said Greene Tweed is building a portfolio that can support customers across the full hydrogen and CCUS value chain. - Arturo Flores said the goal is to reduce seal changes, reduce leaks and improve reliability in applications where failure is not an option.

What's next: - Greene Tweed is asking interested customers to contact the company to discuss the material in low-temperature, high-pressure hydrogen and CCUS applications. - The company will host a webinar on December 8, 2026, titled “Introducing EPM 893: A New Material for Low-Temp, High-Pressure Hydrogen & CCUS Applications.” - Greene Tweed is expected to use the launch to expand adoption across hydrogen transport, storage and carbon capture systems.

The bottom line: - EPM 893 gives hydrogen and CCUS operators a PFAS-free sealing option built for cold, high-pressure and chemically demanding environments.