| S.NO | POLYMERS | HARDNESS RANGE : SHORE'A' SHORE 'D' |
|---|---|---|
| 1. | NATURAL SOFT ( NR) | 25 to 80 'A' |
| 2. | EBONITE | 55 Shore 'D' to 85 'D' |
| 3. | TRIPLY ( Soft + Hard + Soft ) | 25 to 88 'A' |
| 4. | BUTYLl ( IIR) | 60 to 80 Shore 'A' |
| 5. | CHLOROPRENE (C R) | 40 to 80 Shore 'A' |
| 6. | EPDM | 25 to 80 Shore 'A' |
| 7. | HYPALAN ( CSPE ) | 60 to 85 Shore 'A' |
| 8. | NITRILE ( NBR ) | 20 to 85 Shore 'A' |
| 9. | VITION | 60 to 85 Shore 'A' |
| 10. | POLYURETHANE | 80 to 95 Shore 'A' |