RUBBER : NITRILE (NBR)

NBR, as well known as Acrylonitrile Butadiene Rubber, was first developed in 1941 in a project meant to find an oil resistant rubber. However, NBR’s oil resistance depends on the grade of acrylonitrile. The higher the grade of acrylonitrile the better is resistance to oil and fuel. However, as the grade of acrylonitrile increases, the endurance to low temperatures decreases. NBR has good abrasion resistance nonetheless its physical properties are moderate in comparison with the Natural Rubber.

There must be also considered that ozone and electrical properties are poor. Fireproof capabilities are also poor and decrease even more if used with some solvents (mostly polar).

 

GENERAL PROPERTIES min - max
Hardness ShA 30 - 90 ShA
Hardness IRHD 30 - 90 IRHD
Tensile Strength 8 - 20
Elongation at break 100% - 900%
Operating temperature
Continuous Temperature -20 C° - 115C°
Point Température -20 C° - 120C°
Resistances
Resistance to solvents
Resistance to acids
oxygen Ageing
Ozone Ageing
light Ageing
cold Ageing --
heat Ageing --
Colors available :
         
Fireproof option.

Most common applications: fuel bladders, gaskets, o-rings & seals, bladders, diaphragms, etc.

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