Liquid elastomer molding

  • 06-Jul-2009 05:10 EDT

Federal-Mogul's gasket technology is used to assist in fuel-cell development for energy-efficient vehicles. Liquid elastomer molding (LEM) gaskets are constructed with small engineered elastomeric beads molded onto thin carriers that provide sealing performance while reducing the size and weight of each fuel-cell stack. Each LEM gasket can be 0.3 to 0.5 mm (0.011 to 0.019 in) thick, whereas a conventional molded gasket measures at least double that. Suitable to address the challenge of fuel-cell stack construction, LEM gasket technology has been demonstrated to provide sealing performance with a gasket that is estimated to be at least half of the thickness, or size, of other gaskets. Additionally, the LEM technology offers the potential to directly incorporate the gasket into the bipolar plates, offering further reduction in assembly complexity. According to the company, the sealing technology can contribute to a more optimized fuel-cell package and reduced weight, which can support fuel-cell technology to become more widely accepted.

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