Among the great unsung heroes in a vehicle – the Constant Velocity Joint (CVJ) boot. Emphasis on “constant,” this component faces an average of 150,000 miles of pounding, pelting and thermal cycling.
Enter DuPont™ Hytrel® thermoplastic elastomer. Now in its 25th year and celebrating no material failures on the road, Hytrel® delivers the flexibility of rubber, the strength of plastic, and the processibility of thermoplastic.
Hytrel® is the industry standard for excellent balance of grease resistance, high temperature durability, low temperature flexibility and historically proven performance. Hytrel® is proven for use in inboard and outboard CVJ (constant velocity joints) boots, prop shaft boots and rear-wheel-drive boots.
With new product grades optimized for higher temperature resistance, better abrasion resistance and flex fatigue, Hytrel® continues to deliver trouble-free performance despite extreme thermal cycling and exposure to chemicals like road salt.
Benefits to Customer / End User
Compared with rubber, 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.
Excellent fatigue resistance and design flexibility of Hytrel® allows CVJ boots to be designed in smaller sizes than rubber boots, which reduces amount of greases and total cost of the CVJ system.
Hytrel® blow-molding grades can be processed on press-blow, extrusion-blow and injection-blow molding equipment. Hytrel® blow-molding resins can be processed on extrusion-blow, injection-blow and Ossberger press-blow machines.