Advanced materials specialist Greene Tweed has launched a new PFAS-free sealing compound designed for use in hydrogen and carbon capture, utilisation and storage (CCUS) infrastructure, as industries seek more reliable and environmentally compliant technologies for the energy transition.
The Lansdale, Pennsylvania-based company unveiled EPM 893, an ethylene propylene elastomer developed to improve sealing performance across critical hydrogen and CCUS applications while eliminating the use of per- and polyfluoroalkyl substances (PFAS).
The new material has been added to Greene Tweed’s energy transition solutions portfolio and is intended for a range of applications including hydrogen refuelling systems, compressors, valves, pumps, underground storage facilities and carbon dioxide transport infrastructure.
As hydrogen and carbon capture projects expand globally, operators face increasing challenges in maintaining sealing integrity under demanding operating conditions. High-pressure gases, rapid pressure fluctuations, aggressive chemical environments and low temperatures can cause conventional elastomers to crack, blister or lose elasticity over time.
Greene Tweed said EPM 893 was engineered to address those issues while supporting growing industry efforts to reduce reliance on PFAS-containing materials amid tightening regulations.
According to the company, the material maintains sealing performance at temperatures as low as -60°C and has demonstrated resistance to rapid gas decompression in hydrogen and supercritical CO₂ environments at pressures of up to 200 bar. It has also been tested for compatibility with pure hydrogen, oxygen service, supercritical carbon dioxide and amine-based carbon capture processes.
Charles Burke, general manager of Sealing Systems and Seal-Connect at Greene Tweed, said the launch reflects increasing demand for technologies that support the full hydrogen and carbon capture value chain.
The company said the material has been independently tested against several industry standards, including ISO 23936-2, ISO 17268/SAE J2600 and NACE TM0192 requirements.
Arturo Flores, product manager for Sealing Systems, said reliable sealing solutions remain critical to the commercial success of hydrogen and CCUS developments, where system integrity, leak prevention and equipment longevity are essential.
The launch comes as investment in low-carbon hydrogen production and carbon capture infrastructure continues to accelerate worldwide, creating demand for specialised materials capable of supporting long-term operation in challenging environments.
Greene Tweed launches PFAS-free sealing material for hydrogen and carbon capture projects
