NR
Natural rubber
NR continues to be harvested largely in the form of natural latex from the rubber tree. However, an increasing share of the natural rubber required in industry is now produced synthetically by petrochemical processes.
Natural rubber has a relatively high strength and elasticity. Due to its flexibility, even at low temperatures, it is often used for engine mountings and rubber-metal spring elements.
| Abbreviation | NR |
| Trade names | - |
| Chemical name | Natural rubber |
| Mechanical properties | |
Hardness range [Shore hardness A/D] | 30 - 90 |
| Wear resistance | good |
| Tensile strength [Mpa] | 10 - 30 |
| Physical properties | |
| Density [g/cm³] | 1.35 |
| Application temperatures | |
| Short-term temperature range [°C] | -50 - 100 |
| Permanent temperature range [°C] | -30 - 80 |
| Other properties | |
| Flammability acc. to UL 94 | burns |
| Chemical resistance [++ very good // + good // o still good // - moderate // -- unsuitable] | |
| mineral grease, oil | - |
| petrol | -- |
| acids, weak/strong | -/-- |
| alkalis, weak/strong | +/o |
| perchloroethylene | -- |
| trichloroethylene | -- |
| acetone | o |
| alcohols | ++ |
| brake fluid | ++ |
| Hydrolysis resistance (hot water) | + |
| Atmospheric conditions/UV radiation | + |
Information for reference only; we do not assume any liability for its accuracy. The properties of thermoplastics are highly dependent on their specific composition and their additives.