Du Pont marks 25 years of the CVJ boot

ERJ staff report (DS)

Troy, Michigan -- DuPont is marking 25 years of supplying its Hytrel material tothe constant velocity joint market. The company said it has, "more than 1 billion boots in service without material failure - each surviving 150,000 miles of continuous flexing, pelting and thermal cycling."

The original CVJ boot for General Motors-Saginaw Steering Division molded by ABC Group Inc. of Canada has been nominated for a Society of Plastics Engineers Hall of Fame award, granted annually to applications that have been in continuous use for 10 years or more, and that have made a significant and lasting contribution to the application of plastics in automobiles. The inaugural application reduced weight by 40%, significantly reduced piece price and manufacturing tooling costs compared with rubber it replaced, while establishing a "service for life" benchmark that eliminates the need for replacement under normal driving conditions.

Compared with rubber, said DuPont, Hytrel invites thinner design for better packaging in tight spaces, vastly improves performance and durability for greater service life. Compared with co-polyesters, Hytrel® delivers the optimal combination of flexibility and stiffness, protecting against expensive repairs.

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Press release from Du Pont