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KEBAFLEX / U D72 ST B.01 is a TPU with a Shore hardness of 72D. It is characterized by flexibility and good good wear and abrasion resistance.



The trade name KEBAFLEX / U stands for a range of thermoplastic polyurethane elastomers. KEBAFLEX / U is characterized by excellent sliding and wear behavior, suitability for use at elevated temperatures, good UV resistance and high mechanical load-bearing capacity.

Typical areas of application

  • Sealing elements
  • Spring elements
  • Sliding elements
  • Haptic components
  • industrial goods
  • Rollers
  • Gears
  • Timing belt

Industry sectors

  • Automotive
  • Household appliances
  • Industry
  • Agriculture
  • Mechanical Engineering
  • Sports & Recreation


  • flexible
  • good haptics
  • good gliding properties
  • good recovery behavior
  • High wear resistance
  • impact resistant

Overview of product features

Mechanical properties

Breaking stress in MPa
ISO 527-1
Elongation at break in %
ISO 527-1
Compressive strength in MPa
ISO 604
Impact strength (Charpy) at 23°C in kJ/m²
ISO 179-1eU
Notched impact strength (Charpy) at 23°C in kJ/m²
ISO 179-1eA
Compression set at 23°C in %.
ISO 815-1
Compression set at 70°C in %.
ISO 815-1
Shore D hardness
DIN ISO 7619-1

Physical properties

Density in kg/m³
ISO 1183

Rheological properties

Shrinkage in flow direction
ISO 294-4
Shrinkage transverse to the flow direction
ISO 294-4

Pre-drying recommendation:

Dryer type: dry air dryer
Temperature: 90°C
Drying time: 2 – 3 h
Residual moisture: <0.02

Temperature recommendations:

Mass temperature: 215 – 235°C
Tool temperature: 20 – 50°C

Due to its special properties, KEBAFLEX / U may tend to stick to smooth and polished mold surfaces. Structured surfaces favor the demolding behavior. Alternatively, the mold can be provided with suitable coatings. Please ask our application engineering department for more information.


To achieve optimum service properties, the finished parts must be tempered. This heat treatment can be carried out in a forced-air furnace.

Tempering recommendation:

Temperature: 100°C
Tempering time: 20 h

Legal notice

The information in this data sheet is based on our current knowledge and experience. Due to the wide range of possible influences during processing and application of our products, they do not exempt the processor from carrying out his own tests and trials. A legally binding assurance of certain properties or suitability for a specific application cannot be derived from our information.

* FE products are development products which are still in the trial phase. Technical data may still change in the course of product and process development. No final decision has yet been made on the commercialization of FE products. We reserve the right to discontinue the manufacture of FE products without giving further reasons.


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