WEINHEIM, Germany—Freudenberg Sealing Technologies has developed elastomeric sealing solutions for electrolyzers that are used for the production of green hydrogen.
In a statement June 29, FST said it applied its expertise in fuel cell sealing solutions in developing the system for electrolyzers, which are being increasingly used to produce hydrogen power from splitting water.
The company is using a portfolio of proprietary rubber-based gasket materials, including EPDM and FKM formulas, to address the performance requirements and electro-chemistries found in different types of electrolyzers.
To produce the system, FST said it over-molded elastomeric gaskets on to composite and metal electrolyzer stack plates in a four-step process.
Stack plates are used to separate the cells in a stack assembly, and a crucial component of the plates are gaskets that prevent the leakage of gas into other parts of the electrolyzer, the company said.
In addition, Freudenberg said it developed material-specific bonding agents that are applied between the gasket and plate materials to ensure the sealing function is optimized.
"As manufacturing industries make strides in moving toward mass green hydrogen production, our ambitious goal is to support demand for high-capacity electrolyzer gaskets by 2023," said Robert Lidster, technical director, gaskets division, Freudenberg Sealing Technologies.
Here, Lidster said FST has tapped into its years of experience in "successfully sealing fuel cell systems."