PHYSICAL PROPERTIES Natural Rubber NR Styrene Butadiene SBR Neoprene CR Ethylene Propylene EP Butyl BR Nitrile Butadiene NBR Urethane Fluorocarbon Flourosilicone Silicone EpichlorohydrinPHYSICAL PROPERTIES
Polymer Specific Gravity .92 .94 1.25 .86 .92 1.00 1.25 1.86 1.40 1.10-1.60 1.27-1.36Polymer Specific Gravity
Durometer Range 30-90 40-80 30-95 30-90 40-90 40-95 35-100 60-90 40-80 30-90 40-90 Durometer Range
Tensile Strength PSI 4500 3500 4000 3000 3000 4000 5000 3000 1500 1500 2500 Tensile Strength PSI
Elongation % 650 600 600 600 850 650 750 300 400 900 350 Elongation %
Tear Resistance Excels Fair Good Fair Good Good Excels Good Poor Fair/Good Good Tear Resistance
Weather Resistance Fair Poor Good Excels Excels Poor Excels Excels Excels Excels Good Weather Resistance
Ozone Resistance Poor Poor Excels Excels Excels Fair Excels Excels Excels Excels Excels Ozone Resistance
Water Resistance Excels Good Good Excels Excels Good Fair/Good Excels Excels Excels Good Water Resistance
Steam Resistance Good Fair Good Exels Good/Excel Fair/Good Poor Good Fair/Good Fair/Good Fair/Good Steam Resistance
Oil, Gasoline Resistance Poor Poor Good Poor Poor Excels Poor Excels Good Poor/Fair Excels Oil, Gasoline Resistance
Solvent Resistance:
Aliphatic Hydrocarbons Poor Poor Fair Poor Poor Excels Good Excels Excels Poor/Fair Good/Excel Aliphatic Hydrocarbons
Aromatic Hydrocarbons Poor Poor Good Poor Poor Good Fair Excels Good/Excel Poor Good/Excel Aromatic Hydrocarbons
Brittle Point °F -80 -80 -85 -90 -80 -65 -60 to -200 -60 -85 -90 to -180 -10 to -50 Brittle Point °F
Stiffening Point °F -20 to -50 0 to -50 +10 to -50 -20 to -50 -10 to -40 +30 to -40 -10 to -30 +10 to -10 -70 -60 to -180 -15 to -40 Stiffening Point °F
Compression Set Excels Good Good Good/Excel Fair/Good Good Fair Good Fair/Good Good Good Compression Set
Temperature Resistance:
To 212°F Fair Good Good Excels Excels Good Good Excels Excels Excels Excels To 212°F
To 350°F Poor Poor Poor Good Good Poor Poor Excels Excels Excels Fair To 350°F
To 450°F Poor Poor Poor Poor Poor Poor Poor Excels Excels Excels Poor To 450°F
Gas Impermeability Good Fair Good Good Excels Good Good Excels Fair Fair Excels Gas Impermeability
Abrasion Resistance Excels Excels Excels Good Fair/Good Excels Excels Good Poor Fair Fair/Good Abrasion Resistance
Flex Resistance Excels Good Good Good Good Good Good Good Excels Excels Excels Flex Resistance


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