Top-of-the-line rubber extrusions, seals and gaskets start with high-quality materials. We manufacture high-performance parts through the process of rubber extruding, rubber molding and plastic injection. Our components come from high-performance rubber compounds like Natural Rubber(NR), Nitrile Rubber(NBR), Chloroprene Rubber(Neoprene), and Ethylene Propylene Diene Monomer Rubber(EPDM).
Properties of Rubber (NR, NBR, CR, EPDM)
| Property | Natural Rubber
(NR) |
Nitrile Rubber
(NBR) |
Chloroprene Rubber
(Neoprene) |
Ethylene Propylene Diene Monomer Rubber(EPDM) |
| Abbreviations (ASTM D 1418) | NR | NBR | CR | EPDM |
| Hardness (Shore A) (±5) | 40-90 | 45-90 | 40-90 | 40-90 |
| Resistance to tearing (N/mm²) | 4-15 | 4-14 | 4-15 | 6-13 |
| Spring-back elasticity at 20°C | ++ | 0 | + | + |
| Abrasion resistance | ++ | + | + | + |
| Chemical resistance | + | 0 | + | ++ |
| Oil resistance | – | ++ | + | – |
| Fuel resistance | none | + | – | – |
| Solvent resistance | – | + | + | 0 |
| Temperature resistance (°C) | -40 to +80 | -30 to +100 | -25 to +100 | -40 to +120 |
| Ozone resistance | 0 | 0 | ++ | ++ |
| Weather exposure resistance | + | + | ++ | ++ |
| Gas penetration resistance | 0 | + | + | 0 |
| Resistance to permanent deformation | ++ | + | + | + |
| Binding to metal | ++ | 0 | + | 0 |
| Dielectric qualities | ++ | – | 0 | ++ |
Rating Explanation
++ = Perfect or very good
+ = Good
0 = Average qualities
– = Poor qualities
Notes
- Chemical resistance: Stated qualities may vary due to the variety of chemicals, exposure temperatures and durations.
- Resistance to tearing, abrasion and permanent deformation: The properties of the rubber deteriorate at relatively high or low temperatures.
- Temperature resistance: Stated ranges are accurate under normal circumstances; extreme strains or environments will reduce the actual applicable range.