Greene Tweed Introduces PFAS-Free Sealing Material Built for Hydrogen and CCUS Reliability
11/11/2026 Greene Tweed & Co Ltd
EPM 893 reduces sealing tradeoffs by combining low-temperature performance, decompression resistance, and chemical compatibility
Greene Tweed, a global leader in advanced materials and high-performance sealing solutions, today announced the launch of EPM 893, a PFAS-free ethylene propylene compound engineered to improve sealing reliability in critical hydrogen and carbon capture, utilization, and storage (CCUS) service. The latest addition to Greene Tweed’s energy transition solutions portfolio, EPM 893 supports a wide range of applications, including hydrogen refueling systems, valves, instrumentation, mechanical seals, underground storage, CO? compressors, pumps, and pipeline infrastructure.
As hydrogen and CCUS systems scale, seals must withstand high-pressure gas exposure, rapid pressure cycling, aggressive process media, and low-temperature operation conditions that cause conventional elastomers to crack, blister, lose elasticity, or degrade. In addition, teams are rethinking materials they have long relied on in light of certain per- and polyfluoroalkyl substances (PFAS) regulations. EPM 893 helps address these challenges through low-temperature sealing performance, rapid gas decompression (RGD) resistance, and compatibility with hydrogen, supercritical CO?, oxygen, and amine-based carbon capture processes, while eliminating PFAS.
"Companies building hydrogen and CCUS infrastructure need partners who can grow with them from production and capture through transport and storage," said Charles Burke, General Manager, Sealing Systems and Seal-Connect®. "EPM 893 expands a portfolio Greene Tweed is building for that full value chain, and signals where we will continue to invest and deliver end-to-end design expertise for the total sealing system as these markets mature."
Key features of EPM 893 include:
- Low-temperature performance: Supports continuous operating temperatures down to -60°C (-76°F), with a typical service temperature range of -67°C to 150°C (-89°F to 302°F).
- RGD resistance: Demonstrated rapid gas decompression resistance in hydrogen and supercritical CO? environments at pressures up to 200 bar (2,900 psi), helping reduce the risk of blistering and cracking during pressure cycling.
- Broad chemical compatibility: Tested in 100% hydrogen, supercritical CO?, oxygen service, and amine-based carbon capture environments.
- Third party validated: Tested in accordance with ISO 23936-2, ISO 17268/SAE J2600, and NACE TM0192 industry requirements, and achieves complete elimination of PFAS.
- Application flexibility: Available as O-rings, GT® Rings, and custom-molded shapes for valves, instrumentation, mechanical seals, storage systems, compressors, and CO? transport infrastructure.
"Hydrogen and CCUS projects are often evaluated through the lens of megatons and gigawatts, but their success is built on operational discipline: tight systems, low leakage, and equipment that lasts," said Arturo Flores, Product Manager, Sealing Systems. "EPM 893 was developed to reduce the tradeoffs engineers typically face in these environments. It offers a practical path to fewer seal changes, fewer leaks, and the reliability required in applications where failure is not an option.”
To learn more about EPM 893 and how it can benefit performance in your low-temperature, high-pressure hydrogen and CCUS applications, contact Greene Tweed to speak to an expert. Register here to attend Greene Tweed’s upcoming webinar, “Introducing EPM 893: A New Material for Low-Temp, High-Pressure Hydrogen & CCUS Applications,” on December 8, 2026.
Print this articleFor more information, please contact:
Greene Tweed & Co Ltd
Finch Close
Nottingham
NG7 2NN
Tel: 0115 866555
Email: sdoss@gtweed.com
Web: https://www.gtweed.com
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