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Kopak Rubber and Plastic Materials Tech Sheet

Materials

 

NR - Natural Rubber

A material with excellent physical properties, natural rubber has good abrasion and low temperature resistance, however it is not resistant to oils, fuels or UV exposure.

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  • Temperature range: -60°C to +75°C

  • Hardness Shore A: 50°C to 80°C


EPDM - Ethylene Propylene Diene Monomer

This is a material with good physical properties that include excellent resistance to UV, many chemicals, steam and ageing.
It is not, however, compatible with oils or fuels.

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  • Temperature range: -50°C to +130°C

  • Hardness Shore A: 50°C to 80°C


CR Neoprene - Polychloroprene Rubber

Chloroprene rubber is fairly resilient when in contact with oils and chemicals, but has exceptional resistance to UV. This material also has excellent flame retardation qualities.

 

  • Temperature range: -40°C to +95°C

  • Hardness Shore A: 50°C to 80°C


NBR Nitrile - Acrylonitrilebutadiene Rubber

 

A material with exceptional resistance to oils and good resistance to fuels, but is not suitable for applications with prolonged exposure to UV.

 

  • Temperature range: -20°C to +100°C

  • Hardness Shore A: 50°C to 80°C


PVC

PVC is an excellent material for use when chemical and UV resilience is required, It also has good physical characteristics including resistance to corrosion.

 

  • Temperature range: -20°C to +40°C

 

TPR - Thermoplastic Rubber

This material has excellent UV and temperature properties, and has reasonable resistance to oils and fuels.

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  • Temperature range: -20°C to +60°C


SI - Silicone

This material has little resistance to fuels, however has excellent physical properties including temperature, UV, oils and chemical resistance.

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  • Temperature range: -60°C to +200°C

  • Hardness Shore A: 30°C to 70°C


SBR - Styrene Butadiene Rubber

SBR has good physical characteristics including resistance to wear and abrasion, but is not recommended where contact with oils, fuel or high levels of UV are likely.

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  • Temperature range: -55°C to +85°C

  • Hardness Shore A: 60°C to 70°C


FPM - Viton

FPM has excellent all round properties including resistance to high temperature, chemicals, oils and fuels.

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  • Temperature range: -20°C to +200°C

  • Hardness Shore A: 70°C to 80°C


PU – Polyurethane

Polyurethane is a material with high levels of flexibility and elasticity. With good resistance to abrasion, it is also effective when in contact with high temperature and oils.

 

  • Temperature range: -30°C to +85°C

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