| PROPERTIES | TEST METHOD | VALUES METRIC UNITS |
| SPECIFIC GRAVITY | BS 903: PART A1 | 1.15 |
| HARDNESS | BS 903: PART A26 | 50 ± 5 IRHD |
| TENSILE STRENGTH (KG/CM2) | BS 903: PART A2 | 170 |
| ELONGATION AT BREAK ( MIN ) | BS 903: PART A2 | 500% |
| COMPRESSION SET (70 ºC/24 HRS/25% SET) (MAX) | BS 903: PART A6 | 30% |
| TEAR RESISTANCE ( ANGULAR ) MIN | BS 903: PART A3 | 45 KG/CM |
| ABRASION RESISTANCE | 115mm3 | |
| CHANGE IN PROPERTIES | ||
| HEAT AGEING (168 HRS. AT 70ºC ) | BS 903: PART A 19 | |
| — HARDNESS (PTS) | BS 903: PART A26 | + 5 / -5 (MAX) |
| — TENSILE STRENGTH (%) | BS 903: PART A2 | -10 (MAX) |
| — ELONGATION AT BREAK (%) | BS 903: PART A2 | -15 (MAX) |
| POLYMER CONTENT (NATURAL RUBBER) | 100% | |
| ADDITIONAL INFORMATION – | ||
| CHEMICAL RESISTANCE | ||
| — OZONE | BS 903: PART A43 | GOOD |
| — DILUTE ACIDS AND BASES | BS 903: PART A16 | FAIR |
| — CONCENTRATED ACIDS AND BASES | NOT RECOMMENDED | |
| — OILS | NOT RECOMMENDED | |
| — SOLVENTS | NOT RECOMMENDED | |
| TEMPERATURE RANGE | -20º TO + 70ºC | |
| COLOUR | BLACK |