PROPERTIES |
POLYURETHANE | NATURAL.R. | NEOPRENE | NITRILE | HYPALON | EPDM | SILICON | VAMAC | VITON | |
SHORE A HARDNESS |
20-95 | 30-90 | 40-90 | 25-90 | 70-90 | 40-80 | 10-80 | 50-90 | 60-90 | |
| RESISTANCE TO TEARING | E | B | B | B | B | B | P | B | E | |
RESISTANCE TO ABRASION |
E | VG | B | G | VG | G | R | G | B | |
RESISTANCE TO PRESSURE (kg/cm) |
E | E | G to VG | G | VG | G to R | R to P | VG | VG | |
PERMANENT DEFORMATION |
G | G | G | G | G | G | G | G | R to G | |
RESISTANCE TO ACIDS |
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DILUTED ACIDS |
R | R to G | E | G | E | E | G | G | E | |
CONCENTRATED ACIDS |
P | R to G | G | R | VG | E | G | P | E | |
RESISTANCE TO THE SOLVENTS |
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| ALIPHATIC HYDROCARBONS | E | P | G | E | G | P | R to G | G | E | |
| AROMATIC HYDROCARBONS | R to G | P | R | G | R | P | R | R | E | |
| OXYGENATED SUBSTANCES (KETONES) | P | R to G | P | R | P | G | G | P | P | |
| OILS AND PETROL | E | P | G | E | B | P | R | G | E | |
| RESISTANCE TO: | ||||||||||
| OZONE | G | R to G | G | R a B | E | E | E | E | E | |
| HEAT | R | G | G | G | VG-E | VG | E | E | E | |
| COLD | E | E | G | R to G | G | E | E | G | G | |
| WATER ABSORPTION | G | VG | G | G | VG | VG | E | VG | VG |
E: EXCELLENTE / VG: VERY GOOD / G: GOOD / R: REGULAR / P: POOR