Nipol 33-3 Acrylonitrile / Butadiene polymer 9003-18-3 Zeon Chemical Rubber - Elastomer >> Butadiene-acrylonitrile / Nitrile rubber, NBR ADHESIVE Zeon's wide range of NBR elastomers are generally catagorized by the ACN and Mooney Viscosity. The higher ACN levels have better chemical resistance but poorer low temperature properities. The lower ACN levels will have higher swell in oils and fuels, but improved low temperature flexibility. General purpose, low-viscosity nitrile rubber. Designed for injection molding and resistance to mold fouling. Butadiene and acrylonitrile copolymer. Possesses low mooney viscosity and resistance to mold fouling. Used in adhesives.