RESISTANCE OF ELASTOMER TO DIFFERENT CONDITIONS | |||||||||
---|---|---|---|---|---|---|---|---|---|
Properties | Natural | Butyl | Nitrile | Polychloroprene (Neoprene) |
Hypalon | EPDM | Floroelastomer (Viton) |
Silicon | Polyurethane |
Swelling In Lubricating Oil | Poor | Poor | Very Good | Good | Good to Excellent | Poor | Excellent | Fair | Good to Excellent |
Oil and Gasoline | Poor | Poor | Excellent | Good | Good | Poor | Excellent | Fair | Good to Excellent |
Animal and Vegetable Oils | Poor to Good | Very Good | Very Good | Good | Good | Good | Excellent | Good to Excellent | Good to Excellent |
Water Absorption | Very Good | Very Good | Good | Good | Very Good | Very Good to Exc. | Very Good | Excellent | Good at R.T.Poor at 100 ˚C |
Oxidation | Good | Excellent | Good | Very Good to Exc. | Excellent | Excellent | Outstanding | Excellent | Excellent |
Ozone | Poor to Fair | Excellent | Fair | Very Good to Exc. | Outstanding | Outstanding | Outstanding | Excellent | Excellent |
Sunlight Aging | Poor | Very Good | Poor | Very Good | Outstanding | Outstanding | Outstanding | Excellent | Good |
Heat aging (upper limit cont. service) | 85 ˚C | 120 ˚C | 115 ˚C | 95 ˚C | 135 ˚C | 145 ˚C | 205 ˚C | 205 ˚C | 85 ˚C |
Flame | Poor | Poor | Poor | Good | Good | Poor | Excellent | Fair to Good | Fair (will melt) |
Heat | Good | Very Good | Good | Very Good | Excellent | Excellent | Outstanding | Outstanding | Good |
Cold | Excellent | Good | Fair to Good | Good | Good | Excellent | Good | Outstanding | Excellent |