Table 1. Formulation of NBR/PVC Blend Compounds

Ingredients Compound Designations (phr)
NBR100 NBR90 NBR80 NBR70 NBR60
NBR 100 90 80 70 60
PVC 0 10 20 30 40
DOP 0 5 10 15 20
BZ806P 0 0.3 0.6 1.2 2.4
S 2 1.8 1.6 1.4 1.2
ZnO 5 4.5 4 3.5 3
CBS 2 2 2 2 2
DD 1 1 1 1 1
SA 2 1.8 1.6 1.4 1.2
N550 (CB) 50 45 40 35 30