Applications with oil and temperature resistance requirements

Processing Method:
Injection Molding
Color / RAL DESIGN:
black
 
 
Availability:
Globally
Manufacturing Site:
Germany

Typical applications

  • Seals
  • Flexible Connections
  • Fastenings
  • Closures
  • Bumpers
  • Mechanical components
  • Seals for housings

 

Material features

  • Resistance to engine and gear oils
  • Resistance to grease and oils
  • Temperature stability up to 150 °C
  • In-process recycling possible
  • Thermoplastic alternative to elastomers
  • Adhesion to PBT
  • Oil resistant TPV

 

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Value Unit Standard
Hardness 60 Shore A DIN ISO 48-4
Density 1.100 g/cm3 DIN EN ISO 1183-1
Tensile Strength1 5.5 MPa DIN 53504/ISO 37
Elongation at Break1 350 % DIN 53504/ISO 37
Tear Resistance 15.5 N/mm ISO 34-1 Method B (b) (Graves)
CS 24 h/100 °C 58 % DIN ISO 815-1 Method A
CS 24 h/120 °C 65 % DIN ISO 815-1 Method A
CS 24 h/150 °C 82 % DIN ISO 815-1 Method A
Adhesion to PBT2 6.3 N/mm VDI 2019 two-component injection molding
1Deviating from ISO 37 standard test piece S2 is tested with a traverse speed of 200 mm/min.
2The adhesion quality depends on mold design, product geometry and process parameters.
 


PBT used for adhesion test VDI 2019: BASF Ultradur® B4520
All values published in this data sheet are rounded average values.
The expected shelf life of the TPE granules is a minimum of 24 months from the date of delivery, provided that the storage instructions are followed and the product is kept in the unopened original KRAIBURG TPE packaging.
Dry conditions at room temperature (below 40 °C/ 104 °F), away from heat sources and direct sunlight, must be maintained for proper storage. Contact with nitrogen oxides during storage should be avoided.
For further information and individual custom solutions please contact our customer service.

Processing Guideline Injection Molding
Cylinder Temperature 210 - 220 - 230 °C, max. 240 °C (410 - 430 - 450 °F, max. 460 °F)
Hotrunner Hot runner temperatures: 180 - 220 °C (356 - 428 °F). The runner should be empty after a maximum of 2 - 3 shots.
Injection Pressure 1200 - 2000 bar (18855 - 29010 psi); depending on size and weight of the part.
Injection Rate In general, the fill time should not be more than 1–2 seconds.
Hold Pressure We recommend to derive the optimum hold pressure from determining the solidification point, starting with 40 % - 60 % of the required injection pressure.
Back Pressure 20 - 100 bar; if color batches are used, higher back pressure is necessary.
Screw Retraction If an open nozzle is used processing with screw retraction is advisable.
Mold Temperature The mold temperature depends on the hard component. A temperature exceeding 80 °C (175 °F) should be avoided. The common temperature is 40 - 60 °C (105 - 140° F).
Predrying Pre drying of the material of at least 2 h at 105 °C is recommended. Processing with residual moisture of 0,1 % is recommended.
Needle Valve With materials < 50 Shore A the use of a needle valve is advisable.
Screw Geometry Standard 3-zone polyolefine screw.
Residence Time The residence time should be set as short as possible. If the residence time is too long, a distinctive smell will appear and the TPE shows "frothing". Please ensure the forced ventilation instruction mentioned in the material safety datasheet.
Cleaning Recommendation For cleaning and purging of the machine it is appropriate to use polypropylene or polyethylene. Machine must be PVC-free.
Other Information Provide sufficient ventilation and punctiform suction at critical points.
The expected shelf life of the TPE granules is a minimum of 24 months from the date of delivery, provided that the storage instructions are followed and the product is kept in the unopened original KRAIBURG TPE packaging.
Dry conditions at room temperature (below 40 °C/ 104 °F), away from heat sources and direct sunlight, must be maintained for proper storage. Contact with nitrogen oxides during storage should be avoided.