design guide

Nitrile/PVC Resin Blends (NBR/PVC)

PVC resins are blended with nitrile polymers to provide increased resistance to ozone and abrasion. The PVC also provides a significant improvement in solvent resistance yet maintains similar chemical and physical properties, commonly noted among nitrile elastomers. In non-black compounds the addition of the PVC resins also provides a greater pigment-carrying capacity that allows better retention of pastel and bright colors.

Compound Hardness
Shore A
Tensile Elongation
(%)
MPa psi
567A 60 13.8 2000 400
567B 80 10.0 1455 400
477B 90 14.5 2100 150