Viton® News 2 - Article 1

DuPont Performance Elastomers Increases Focus On Best-In-Class Elastomers And Sealing Solutions

Following a successful launch in July, DuPont Performance Elastomers is exhibiting at the 2005 ACS Rubber Expo and Technical Meeting, showcasing Viton® fluoroelastomers, Hypalon® chlorosulfonated polyethylene and Neoprene polychloroprene selected from its broad portfolio of high performance elastomers. The company is presenting three technical papers on advances in fluoroelastomer performance for automotive fuel system sealing, and is collaborating with Hamilton Mold & Machine and Engel Canada for an overmolding demo of Viton® over Nylon 66 to produce, inspect and pack a finished part in less than 90 seconds.

DuPont Performance Elastomers has increased its focus on providing high performance elastomers and sealing solutions to meet a broad range of customer needs. According to the company, it will deliver innovative new offerings through its worldwide organization to support customers in the global shift to new markets.

Viton® made with Advanced Polymer Architecture

The company is demonstrating the evolution of a broad range of Viton® specialty fluoroelastomers types made with Advanced Polymer Architecture that offer superior processing as well as other benefits.

Also presented is the latest testing conducted by DuPont Performance Elastomers that demonstrates the superior long-term stability of Viton® made with APA in fuel C/methanol blends after 5000 hours, a critical requirement in automotive sealing.

Overmolding demo with Engel and Hamilton

DuPont Performance Elastomers collaborated with Engel Canada and Hamilton Mold & Machine in Booth 524, using a fully automated machine cell consisting of two Engel machines and an Engel ERC robot to demonstrate how to mold a thermoplastic Nylon 66 part, overmold with Viton®, vision inspect, and pack for customer shipment - all within 90 seconds.

Because APA polymers reduce or eliminate the need for post-cure, the fluoroelastomer can be molded directly onto plastic and metal inserts reducing the potential for damage or warping during post-cure operations. In combination with Viton®, Engel and Hamilton Mold will show how to remain competitive with the latest molding technology aimed at improving performance and lowering production costs.

Advances in automotive fuel system sealing

Scientists from DuPont Performance Elastomers will present three papers on advances in fluoroelastomer sealing of automotive fuel systems at the ACS Rubber Division Technical Meeting:

• "Long Term Fuel and Heat Aging of Low Temperature Types of Fluoroelastomers", by Ronald D. Stevens.
• "Fluoroelastomers for Extrusion of Thin Wall Veneers and Tubes for Fuel Hose Applications", by Christopher Grant.
• "Long Term 150°C Stress Relaxation of GLT-S Fluoroelastomers", by Ronald D. Stevens.

Hypalon® and Neoprene Provide Performance When It Matters

The company will feature product offerings and recent commercial projects for Hypalon®, reflecting an increased customer interest in the world's leading chlorosulfonated polyethylene, supported by re-startup of its development facility in Beaumont, Texas.

Still the workhorse of the industry and focus of continued innovation, Neoprene synthetic rubber remains the yardstick for physical toughness in thousands of static and dynamic applications.

About DuPont Performance Elastomers

DuPont Performance Elastomers, a global supplier of specialty elastomers with headquarters in Wilmington, Delaware, USA, is a wholly owned subsidiary of DuPont. The company is an industry leader in chloroelastomers and fluorinated elastomers, serving the automotive, chemical, petrochemical, semiconductor, food and pharmaceutical processing, construction, general rubber and wire and cable industries.

To purchase Viton® o-rings and seals, call certified dealer Problem Solving Products at (303) 758-2728.

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Viton® is a registered trademark of DuPont Dow Elastomers.