Natural rubber natural product, it is characterized by the highest flexibility, tensile strength and excellent physical properties not suitable for petrol, benzene, oils, fats, high temperatures and ozone.
| Shore A hardness range | 30 to 90 |
| Tensile strenght N / mm2 | 30 |
| ductility % | 800 |
| flexibility | excellent |
| Pressure deformation difference | very good |
| Abrasion resistance | good |
| temperature range | -50 |
| usability °C | 90 |
| On a short-term basis °C | 100 |
| Aging resistance | very bad |
| Aging resistance | medium |
| Water resistance up to + 80 °C | good |
| Alkalis resistance up to + 80 °C | good |
| gas permeability | good |
| Petrol resistance | very bad |
| Benzole resistance | very bad |
| Resistance to mineral oils and fats | very bad |
| Acid resistance | good |
| Suitability for connection with metals | excellent |
| Suitability for food | Yes |