New Hytrel® HTR8745 BK320 Thermoplastic Polyester Elastomer for Automotive Inboard CVJ Boots 

Building on over 30 years and 1 billion CVJ boots manufactured with DuPontTM HYTREL®

Geneva, 15 October, 2018 – DuPont Transportation & Advanced Polymers, a newly formed business segment within DowDuPont’s Specialty Products Division, is introducing DuPont™ Hytrel® HTR8745 BK320 a new grade of TPC-ET developed for blow molding of constant velocity joint (CVJ) inboard boots. An industry leader in co-polyester elastomer solutions for CVJ boots, DuPont has engineered a next-generation, high-performance thermoplastic elastomer with excellent heat and fatigue resistance.

“Introduced in 1984 for automotive CVJ outboard boots, Hytrel® is the industry standard for excellent balance of grease resistance, high-temperature durability, low-temperature flexibility and historically proven performance,” said Laurent Lefebvre, marketing manager, DuPont Transportation & Advanced Polymers. “This next-generation material for blow molding builds on a proud heritage and provides further advancements specifically for CVJ inboard boot applications.”

DuPont™ Hytrel® HTR8745 BK320 provides multiple benefits that include:

·         Improved processing (press blow molding, injection blow molding) with low die swell and better parison


·         Good thermal resistance up to 140°C

·         Flex-fatigue resistance for long boot life

·         Abrasion resistance for high-angle installation with compact boot designs

·         Tear resistance for protection from road debris

·         Stiffness to resist ballooning

·         Low grease permeation for extended joint life

DuPont™ Hytrel® also is used for other automotive powertrain and chassis applications such as air ducts, steering rack & pinion boots and propeller shaft boots.

For more information contact your DuPont sales representative or visit

About DuPont Transportation & Advanced Polymers

DuPont Transportation & Advanced Polymers (T&AP), a DowDuPont Specialty Products Division business, delivers a broad range of technology-based products and solutions to the transportation, electronics, industrial and consumer markets. T&AP partners with its customers to drive innovation by utilizing its expertise and knowledge in polymer and materials science.  T&AP works with customers throughout the value chain to enable material systems solutions for demanding applications and environments.

About DowDuPont Specialty Products Division

DowDuPont Specialty Products, a division of DowDuPont (NYSE: DWDP), is a global innovation leader with technology-based materials, ingredients and solutions that help transform industries and everyday life. Our employees apply diverse science and expertise to help customers advance their best ideas and deliver essential innovations in key markets including electronics, transportation, building and construction, health and wellness, food and worker safety. DowDuPont intends to separate the Specialty Products Division into an independent, publicly traded company. More information can be found