Properties | Natural Isoprene | Nitrile N.B.R | Neoprene C.R. | Hypalon | Butyle | EPDM | Silicone | Viton Fluoro Carbon | Poly urethane |
Hardness Rang (Durometer) | 30-90 | 20-10 | 30-95 | 40-95 | 35-85 | 40-90 | 25-85 | 55-95 | 60-90+ |
Tensile Strength (PSI) | 3000 | 3500 | 3000 | 2500 | 2000 | 3000 | 1100 | 1800 | 4000 |
Specific Gravity | 0.93 | 1.00 | 1.23 | 1.12-1.2 | 0.92 | 0.86 | 0.98 | 1.85 | 1.06 |
Specific Gravity (Base Material) | 0.93 | 1.00 | 1.23 | 1.12-1.2 | 0.92 | 0.86 | 0.98 | 1.85 | 1.06 |
Vulcanizing Properties | E | E | E | E | F | E | E | G | E |
Adhesion to metals | E | E | E | E | F | E | F | G | E |
Adhesion to Fabrics | E | E | E | G | F | G | F | E | E |
Tear Resistance | G | F | G | F | G | G | P | F | E |
Abrasion Resistance | E | E | E | E | G | E | P | G | O |
Compression Set | G | G | G | G | E | G | G | G | F |
Electrical Insulation | G | P | G | G | E | E | E | G | G |
Permeability to Gases | F | F | P | P | P | F | G | P | F |
Acid Resistance | G | G | E | F | F | E | G | E | F |
Dilute Concentrated | G | G | G | G | G | E | P | E | P |
Properties | Natural Isoprene | Nitrile N.B.R | Neoprene C.R. | Hypalon | Butyle | EPDM | Silicone | Viton Fluoro Carbon | Poly urethane |
Solvent Resistance | P | E | G | G | P | P | F | E | E |
Alipatic Hydro Carbon | P | G | G | F | P | P | F | E | F |
Aromatic Hydro Carbons | G | P | F | P | F | G | F | P | P |
Oxygenated (Ketone, etc) |
P | F | P | P | F | P | P | P | |
Laquer Solvents |
Properties | Natural Isoprene | Nitrile N.B.R | Neoprene C.R. | Hypalon | Butyle | EPDM | Silicone | Viton Fluoro Carbon | Poly urethane |
Resistance To | P | G | G | E | P | P | F | E | E |
Swelling in Lubracating | P | G | G | G | P | P | F | E | E |
Oil | P | G | G | G | G | G | F | E | E |
Oil & Gasoline | G | E | G | G | E | G | E | G | GP100oC |
Animal & Vegebale Oil | G | F | E | F | F | E | E | O | E |
Water Absorption | F | P | E | O | F | O | E | O | E |
Oxidation | P | P | G | O | F | O | G | O | G |
Ozone | |||||||||
Sunlight Ageing |
Properties | Natural Isoprene | Nitrile N.B.R | Neoprene C.R. | Hypalon | Butyle | EPDM | Silicone | Viton Fluoro Carbon | Poly urethane |
Heat Ageing (Upp) | 75oC | 90oC | 95oC | 135oC | 110oC | 145oC | 180oC | 205oC | 85oC |
Cont. Service | P | P | G | G | P | P | F | E | F |
Flame | G | G | G | E | G | E | E | O | G |
Heat | E | F | G | G | G | E | E | G | E |
Cold |
G - GOOD | P - POOR | E - EXCELLENT | F - FAIR | O - OUTSTANDING |