| Rubber Matrix (wt%) | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| IIR | EPDM | E7I3/ | E7I3/ | E7I3/ | E7I3/ | E7I3/ | E7I3/ | E7I3/ | |
| CB30/S1.5 | CB50/S1.5 | CB30/S3.0 | CB30/P0.5 | CB30/P1.0 | CB30/P2.0 | CB30/P3.0 | |||
| IIR | 100 | - | 30 | 30 | 30 | 30 | 30 | 30 | 30 |
| EPDM | 100 | 70 | 70 | 70 | 70 | 70 | 70 | 70 | |
| Additive (phr) | |||||||||
| Zinc oxide | 5 | 5 | 5 | 5 | 5 | - | - | - | - |
| Stearic acid | 2 | 2 | 2 | 2 | 2 | - | - | - | - |
| CB | 30 | 30 | 30 | 50 | 30 | 30 | 30 | 30 | 30 |
| DM | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 | - | - | - | - |
| CZ | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | - | - | - | - |
| S | 1.5 | 1.5 | 1.5 | 1.5 | 3 | - | - | - | - |
| Peroxide | - | - | - | - | - | 0.5 | 1 | 2 | 3 |