The versatile, resilient, durable copolyester

DuPont™ Hytrel® TPC-ET thermoplastic elastomer combines the flexibility of rubber with the strength and processability of thermoplastics. Manufacturers prefer parts made with Hytrel®  for their resilience, heat and chemical resistance, as well as their strength and durability.

Hytrel® drives innovative design, enabling the development of unique parts with multiple performance characteristics. This versatile thermoplastic elastomer resin can flex in multiple directions, cycle after cycle, long after rubber would break. Its durability has made it an essential ingredient in automotive components such as the Constant Velocity Joint (CVJ) boot, which must endure an average of 150,000 miles of pounding over a wide range of temperatures.

DuPont™ Hytrel® RS delivers all of the benefits of Hytrel®, yet it contains up to 60 percent renewably sourced materials from biomass, making it an excellent product for applications demanding renewably sourced options.



  • Automotive boots & bellows 
  • Air ducts 
  • Wire and cables 
  • Consumer electronics 
  • Medical devices 
  • Seals and gaskets 
  • Sportswear and athletic goods 
  • Tubes and hoses 
  • Specialty films and garments 
  • Furniture


Flexibility and resilience icon

Flexibility and resilience

Hytrel® flexes and recovers, providing excellent flex fatigue and tear resistance, low hysteresis and spring-like properties. 

Strength and abrasion resistance icon

Strength and abrasion resistance

Hytrel® offers exceptional toughness, impact and creep resistance.

 Easy processing (wide process window with thermal stability) icon

Easy processing

Hytrel® can be molded by injection, blow or rotational techniques; it can be extruded into tubes, profiles, fibers/filaments, sheet, blown or cast film, web coating, nonwovens, wire and cable jacketing.

Broad service temperature (-40°C to 150°C) icon

Broad service temperature

Flexibility at low temperatures, and good retention of mechanical properties at high temperatures.

Chemical resistance (to hydrocarbons & other fluids) icon

Chemical resistance

Hytrel® stands up to oils, fuels, hydrocarbon-based solvents, and many other chemicals.

Enables over-molding and innovative designs icon

Enables over-molding and innovative designs

Hytrel® is compatible with other thermoplastics such as PC, ABS and polyesters, allowing over-molding and coextrusion. 

Allows rework and recycling icon

Allows rework and recycling

The exceptional melt stability and thermoplastic nature of Hytrel® allow the recycling of processing scrap. Hytrel® can be reground and blended with virgin polymer.


Product families

Hytrel® is a plasticizer-free thermoplastic polyester elastomer that offers an outstanding combination of flexibility, stable mechanical performance over a broad temperature window, straightforward processing characteristics and other properties.


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