With its ability to withstand continuous operating temperatures of up to 180°C and peaks of up to 190°C, it has high temperature resistance unequalled among thermoplastic elastomers. Arnitel HT also has good resistance to the sorts of oils and chemicals found in automobile engine environments.

Critically, Arnitel HT's combination of elasticity with high mechanical strength means that it can be used to produce the entire duct in a single piece, using 3D suction blow molding. Wall thicknesses can be approximately halved.

"Ducts produced in Arnitel HT can withstand the internal operating pressures which are demanded by car producers, not only for models in production today but also for upcoming generations," says Kurt Maschke, Global Segment Manager Air/Fuel, DSM. "And by using a single solution based on a material with excellent mechanical performance and a relatively low density in an optimised design, it is possible to obtain weight savings of as much as 40 percent."

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