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Nitrile Butadiene Rubber

Nitrile-butadiene rubber (NBR) is a copolymer made from butadiene and acrylonitrile. NBR is essential for technical rubber products that need to be resistant to mineral oils, service fluids, and greases in automotive applications and machinery.

Krynac® 33110 F High Mooney
Property Nominal Value Test Method Condition Temperature
Mooney Viscosity 110 MU ISO 289 / ASTM D 1646 ML (1+4) 100 °C
Acrylonitrile Content 33,0 wt % ISO 24698
Density 0,97 g/cm³ Internal Method
Krynac® 3330 F Medium Cure
Property Nominal Value Test Method Condition Temperature
Mooney Viscosity 30 MU ISO 289 / ASTM D 1646 ML (1+4) 100 °C
Acrylonitrile Content 33,0 wt % ISO 24698
Density 0,97 g/cm³ Internal Method
Krynac® 3345 F Medium Cure
Property Nominal Value Test Method Condition Temperature
Mooney Viscosity 45 MU ISO 289 / ASTM D 1646 ML (1+4) 100 °C
Acrylonitrile Content 33,0 wt % ISO 24698
Density 0,97 g/cm³ Internal Method
Krynac® 3370 F Medium Cure
Property Nominal Value Test Method Condition Temperature
Mooney Viscosity 70 MU ISO 289 / ASTM D 1646 ML (1+4) 100 °C
Acrylonitrile Content 33,0 wt % ISO 24698
Density 0,97 g/cm³ Internal Method
Krynac® 4450 F High ACN
Property Nominal Value Test Method Condition Temperature
Mooney Viscosity 50 MU ISO 289 / ASTM D 1646 ML (1+4) 100 °C
Acrylonitrile Content 43,5 wt % ISO 24698
Density 1,00 g/cm³ Internal Method
Krynac® 4955 F High ACN
Property Nominal Value Test Method Condition Temperature
Mooney Viscosity 55 MU ISO 289 / ASTM D 1646 ML (1+4) 100 °C
Acrylonitrile Content 48,5 wt % ISO 24698
Density 1,00 g/cm³ Internal Method
Krynac® 4975 F High ACN
Property Nominal Value Test Method Condition Temperature
Mooney Viscosity 75 MU ISO 289 / ASTM D 1646 ML (1+4) 100 °C
Acrylonitrile Content 48,5 wt % ISO 24698
Density 1,00 g/cm³ Internal Method
Krynac® M 3340 F Plasticizer Extended
Property Nominal Value Test Method Condition Temperature
Mooney Viscosity 33 MU ISO 289 / ASTM D 1646 ML (1+4) 100 °C
Acrylonitrile Content 33 wt % ISO 24698
Density 0,98 g/cm³ Internal Method
Krynac® X 146 Carboxylated
Property Nominal Value Test Method Condition Temperature
Mooney Viscosity 45 MU ISO 289 / ASTM D 1646 ML (1+4) 100 °C
Acrylonitrile Content 32,5 wt % ISO 24698
Density 0,97 g/cm³ Internal Method
Krynac® X 160 Carboxylated
Property Nominal Value Test Method Condition Temperature
Mooney Viscosity 58 MU ISO 289 / ASTM D 1646 ML (1+4) 100 °C
Acrylonitrile Content 32,5 wt % ISO 24698
Density 0,97 g/cm³ Internal Method