Automotive Applications, Thermoplastic Fuel Vent Tubing, Thermoplastic Vulcanizate

Troy, Mich., -- June 14, 2004 -- DuPont to feature emerging automotive applications at the Automotive Elastomers Conference.

New TFLEX™ fuel vent tubing from Teleflex Fluid Systems relies on DuPont™ ETPV engineering thermoplastic vulcanizate to provide a strong, flexible structure that can be easily formed into complex shapes. DuPont Engineering Polymers will feature the tubing and other emerging automotive applications for ETPV at the Automotive Elastomers Conference, June 15-16 in Dearborn, Mich.

The tubing complies with P-ZEV (partial zero-emissions vehicle) requirements, according to Teleflex. It is a three-layer coextruded construction also containing a barrier polymer to block permeation and a conductive resin to help dissipate static charges.

The first commercial application for the new tubing will hit the market this fall in a 2005 model car. The part involved is complex three-dimensional tube for conveying fuel vapor captured at the car's filler neck to an emission canister.

"Our TFLEX™ tubing both minimizes permeation losses and reduces costs compared with conventional rubber tubing," said Rich Hahn, project engineer at Teleflex. The tubing complies with strict new evaporative emission standards pending implementation by California, other states and the Federal Environmental Protection Agency, according to Teleflex.

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