What is NBR ?
NBR: Nitrile rubber, is a synthetic rubber derived from acrylonitrile (ACN) and butadiene. Trade names include Perbunan, Nipol, Krynac and Europrene. This rubber has unique properties that make it resistant to oil, fuel and other chemicals.
NBR is used in the automotive and aerospace industries to manufacture fuel and oil handling hoses, seals, rope rings and self-sealing fuel tanks. Used in the nuclear industry to make protective gloves. NBR’s stability at high temperatures from −40 to 108°C (−40 to 226°F) makes it an ideal material for aviation applications.
Characteristics of nitrile butadiene rubber
Operating temperature is limited to (-40 º – 120 º), with good compression permanent deformation value. NBR performance is also determined by acrylonitrile content, standard NBR contains about 31% acrylonitrile. More acrylonitrile improves mechanical properties and resistance to oil and fuel, but increases the temperature at which the rubber becomes brittle/reaches the glass point.
Application of nitrile rubber
NBR applications include disposable non-latex gloves, automotive drive belts, hoses, O-rings, gaskets, oil seals, V-belts, synthetic leather, printer formwork rollers and cable sheaths; NBR latex can also be used to prepare adhesives and as pigment adhesives.
