Materials | Natural Rubber | SBR | EPDM | Chloroprene CR | NBR | Silicone VMQ | HNBR | Fluoro Carbon FKM | Fluoro Silicone FMVQ | Polyurethane PU |
Hardness Range | 40-90° | 40-90° | 30-90° | 30-90° | 30-90° | 30-80° | 50-90° | 60-90° | 40-80° | 30-80° |
Colours | Limited Range | Limited Range | Limited Range | Limited Range | Limited Range | More Variations | Limited Range | Limited Range | Limited Range | Limited Range |
Physical Properties | ||||||||||
Physical Strength | Excellent | Good | Good | Good | Good | Poor | Good | Good | Poor | Excellent |
Compression Set | Good | Good | Good | Fairly Good | Good | Good | Good | Good | Good | Good |
Tear & Abrasion Resistance | Excellent | Good | Good | Good | Good | Poor | Very Good | Good | Poor | Excellent |
Resilience | Excellent | Good | Very Good | Very Good | Good | Good | Fair | Fair | Fair | Fair |
Permeability To Gas | Poor | Fairly Low | Fairly Low | Low | Low | Fairly Low | Good | Very Low | Fairly Low | Low |
Electrical Strength | Excellent | Excellent | Excellent | Good | Poor | Excellent | Poor | Good | Excellent | Good |
Flame Resistance | Poor | Poor | Poor | Self-extinguishing | Poor | Good | Poor | Self-extinguishing | Self-extinguishing | Poor |
Resistance To Temperatures | ||||||||||
Maximum- Continuous | 75°C | 85°C | 130°C | 95°C | 100°C | 205°C | 125°C | 205°C | 180°C | 70°C |
Maximum- Intermittent | 105°C | 115°C | 150°C | 125°C | 130°C | 300°C | 160°C | 300°C | 200°C | 90°C |
Low Temperature Resistance | -60°C | -55°C | -50°C | -40°C | -40°C | -60°C | -30°C | -20°C | -60°C | -20°C |
Weather Resistance | ||||||||||
Oxidation Resistance | Fair | Fair | Excellent | Very Good | Good | Excellent | Excellent | Outstanding | Excellent | Excellent |
Ozone & Weathering Resistance | Poor | Poor | Outstanding | Very Good | Fair | Outstanding | Fair | Outstanding | Very Good | Excellent |
Fluid Resistance | ||||||||||
Water Resistance | Very Good | Good | Excellent | Good | Good | Good | Very Good | Good | Good | Good |
Resistance to Acids | Fair | Fair | Good | Good | Good | Fair | Good | Excellent | Good | Poor |
Resistance to Bases | Good | Good | Good | Fair | Fair | Fair | Good | Good | Fair | Poor |
Detergent Solutions | Good | Good | Very Good | Good | Very Good | Very Good | Very Good | Very Godd | Very Good | Poor |
Dry Cleaning Fluids | Poor | Poor | Poor | Poor | Poor | Poor | Poor | Very Good | Good | Poor |
Salt Water | Very Good | Very Good | Very Good | Good | Very Good | Very Good | Very Good | Very Good | Very Good | Poor |
Sewage | Good | Good | Good | Good | Very Good | Good | Very Good | Very Good | Very Good | Poor |
Gasoline | Poor | Poor | Poor | Poor | Good | Poor | Very Good | Very Good | Very Good | Good |
Oil Resistance | ||||||||||
Diesel Oil | Poor | Poor | Poor | Poor | Very Good | Poor | Good | Good | Good | Good |
Hydraulic Oil- Petroleum based | Poor | Poor | Poor | Good | Very Good | Poor | Very Good | Very Good | Good | Good |
Kerosene | Poor | Poor | Poor | Good | Very Good | Poor | Very Good | Very Good | Good | Good |
Liquefied Petroleum Gas | Poor | Poor | Poor | Good | Very Good | Poor | Very Good | Very Good | Poor | Good |
Lubricating Oils- Petroleum based | Poor | Poor | Poor | Good | Very Good | Poor | Poor | Very Good | Very Good | Good |
Mineral Oil | Poor | Poor | Poor | Good | Very Good | Good | Very Good | Very Good | Very Good | Good |
ASTM Oil No.1- IRM 901 | Poor | Poor | Poor | Very Good | Very Good | Fair | Very Good | Very Good | Very Good | Good |
ASTM Oil No.2- IRM 902 | Poor | Poor | Poor | Very Good | Very Good | Fair | Very Good | Very Good | Very Good | Good |
ASTM Oil No.3- IRM 903 | Poor | Poor | Poor | Very Good | Very Good | Fair | Very Good | Very Good | Very Good | Good |
Brake Fluids | Fair | Very Good | Very Good | Fair | Poor | Poor | Poor | Poor | Poor | Good |