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Vamac - ACM - DuPont
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...e higher demands of the operating environment (continuous service temperature of 140°C and oil-vapour-laden air). Ethylene acrylate copolymer (AEM, grade: Vamac, DuPont ) is superior to ACM in cylinder head covers and represents additional competition for it in this application. In 2001, a new low-temperature ACM (Nipol AR 12, Curesite technology) was launched with greatly improved compression set, correspondingly better long-term sealing efficiency (> 4000h at 150°C) and considerably lower swel...
Kunststoffe international, 2005-11-21, Elastomers
...its (130°C) are exceeded at a continuous service temperature of 140°C and oil-vapour-laden air. Ethylene-acrylate copolymer (AEM, grade: Vamac, DuPont) is superior to ACM in cylinder-head covers, and continuing to be a competitor here. Ethylene-vinyl acetate copolymer (EVM, grade: Levaprene, Bayer) is not only used for shoe soles, but for halogen-free cable sheathing and insulation, and, because of its outstanding flame resistance (B1, no toxic and corrosive gases) for rubber flooring in...
Kunststoffe international, 2008-01-15, Elastomer Industry Has Understood
...ratures of 175°C and for temperature peaks of up to 200°C in contact with air, engine oil, transmission oil, and diesel and retain their flexibility down to –35°C with minimal change in hardness and volume swelling. Vamac Ultra is a new family of products in the DuPont range of heat- and oil-resistant ethylene-acrylic rubbers. Compared with the proven AEM standard grades, these new products offer significant increases in both performance and processability, as initial customer trials have confir...
Kunststoffe international, 2010-09-24, Elastic Diversity
... K2007. The company wants to satisfy customer demand for more sustainable products. DuPont addresses the challenges of increased packing density in the engine compartment and electromobility with its latest high-temperature ethylene-acrylic rubber Vamac ultra HT (Fig. 2). This offers processors performance and cost advantages over the usual materials. For even more extreme requirements, the company supplies Viton fluoroelastomer, which retains its sealing function from - 40 to +203°C. This produ...
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