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KEBAFLEX / U A 85 ST C01 is a TPU with a Shore hardness of A 85. It is characterized by its excellent flowability and is also suitable for thin-walled components.KEBAFLEX / U A 85 ST C01 has very good hydrolysis resistance, is flexible at low temperatures and resistant to microorganisms.



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
  • shockproof housing
  • Gears
  • Timing belt

Industry sectors

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


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

Overview of product features

Mechanical properties

Breaking stress in MPa
ISO 527-1
Elongation at break in %
ISO 527-1
Notched impact strength (Charpy) at 23°C in kJ/m²
ISO 179-1eA
Notched impact strength (Charpy) at -30°C in kJ/m²
ISO 179-1eA
Compression set at 23°C in %.
ISO 815-1
Shore A hardness
DIN ISO 7619-1
Stress at 10% elongation
DIN EN ISO 527-1
Stress at 50% elongation
DIN EN ISO 527-1
Stress at 100% elongation
DIN EN ISO 527-1
Stress at 300% elongation
DIN EN ISO 527-1

Physical properties

Density in kg/m³
ISO 1183

Thermal properties

Melting temperature (DSC, 10°C/min) in °C
ISO 11357-1/-3

Pre-drying recommendation:

Dryer type: dry air dryer
Temperature: 90°C
Drying time: 3 – 4 h
Residual moisture: < 0.02

Temperature recommendations:

Melt temperature: 210 – 230°C
Mold temperature: 20 – 40°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 consult our application engineering department.

Dwell time on the machine:

Aim for short dwell time, empty cylinder when production is interrupted, lower temperature, flush with fresh material when restarting.


To achieve optimum service properties, tempering of the finished parts is required. 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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