Caoutcchouc nbr

NBR 3335, 3345, NBR 3365, NBR 3385 are essentially an acrylonitrile (31 - 35 %) and 1,3 butadiene copolymer obtained by emulsion polymerization method at a temperature with the use of fatty acid soaps as emulsifier in accordance with the ecologically clean technology. Medium content of acrylonitrile, heightened oil resistance.

Product characteristics:

Appearance - bales of light-yellow to pink color;
Weight of a bale- (30 ±0,5) kg
Packing - a plastic container 540 or 450 kg or a universal container 1260 or 1080 kg
Shelf life - one (1) year since the date of manufacture


Parameter NBR 3335 NBR 3345 NBR 3365 NBR 3385 Test method
Mooney viscosity MML (1+4) 100°C 35±3 45±3 65±3 85±3 based on method ASTM
D 1646
Volatile matter content, %, max 0,8 0,8 0,8 0,8 based on method
ASTM D 5668
Ash content,%, max. 0,5 0,5 0,5 0,5 based on method
ASTM D 5667
Acrylonitrile content,% 31-35 31-35 31-35 31-35 method of supplier
ASTM D 3187 (method A), 145 °C x 50 min.
300% Modulus MPa,min. 8,8 8,8 9,8 10,8 based on method
ASTM D412
Tensile strength, MPa, min. 22,5 22,5 23,5 24,0 based on method
ASTM D412
Elongation at break, %, min. 450 450 450 425 based on method
ASTM D412