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Comparative Properties of Typical Commercial Elastomers
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CHEMICAL NAME
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Polyacrylate
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Fluoroalkyl Polysiloxane
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Polysiloxane
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Fluorinated Hydrocarbon
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Fluoroelastomer
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Perfluoroelastomer
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COMMON NAME
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Acrylic
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Fluorosilicone
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Silicone
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Flurocarbon
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Material Designation
(ASTM D 2000, SAE J 200 Classification) |
Not Assigned
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FK
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GE
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HK
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HK
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FFKM
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Tensile Strength, Mpa
(psi) |
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Pure Gum
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–
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Below 10.3 (1,500)
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Below 10.3 (1,500)
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8.3 (1,200)
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Over 12.4 (1,800)
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Not Applicable
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Black Loaded Stocks
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Over 17.2 (2,500)
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Over 10.3 (1,500)
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Over 10.3 (1,500)
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3.4 (500) – 20.7 (3,000)
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Over 13.8 (2,000)
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Over 13.8 (2,000)
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Hardness Range
(Durom, A) |
40-95A
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60-90
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40-85
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60-90
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55-95
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65-95A
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Specific Gravity
(Base Material) |
1.08-1.12
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1.30-2.20
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1.14-2.05
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1.80
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1.85
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2.01
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Adhesion to Metals
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Very Good to Excellent
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Excellent
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Excellent
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Fair to Good
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Fair to Good
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Fair
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Adhesion to Fabrics
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Good
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Excellent
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Excellent
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Good
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Good to Excellent
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Good
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Tear Resistance
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Good
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Poor to Fair
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Poor
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Fair to Good
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Fair
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Fair
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Abrasion Resistance
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Good
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Poor
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Poor
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Good
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Good
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Good
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Compression Set
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Good
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Good
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Fair
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Very Good
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Fair to Good (Except at High Temp)
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Fair
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Rebound
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Cold
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Poor
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Excellent
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Excellent
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Fair
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Fair to Good
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Not Available
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Hot
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Fair
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Excellent
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Excellent
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Good
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Good (Except at High Temp)
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Not Available
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Dielectric Strength
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Good
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Good
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Good
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Very Good
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Good
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Excellent
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Electrical Insulation
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Fair to Good
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Excellent
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Excellent
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Good
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Fair to Good
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Excellent
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Permeability to Gases
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Very Low
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Fairly Low
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Fairly Low
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Very Low
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Very Low
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Fair
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Acid Resistance
|
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Diluted
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Good
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Excellent
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Excellent
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Good to Excellent
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Excellent
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Excellent
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Concentrated
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Poor
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Fair
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Fair
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Excellent
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Excellent
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Excellent
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Solvent Resistance
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Aliphatic Hydrocarbons
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Good
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Excellent
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Poor
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Excellent
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Excellent
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Excellent
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Aromatic Hydrocarbons
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Fair
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Excellent
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Poor
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Excellent
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Excellent
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Excellent
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Oxygenated (Keytones, etc.)
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Poor
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Poor
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Fair
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Poor
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Poor
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Excellent
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Laquer Solvents
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Poor
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Poor
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Poor
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Poor to Fair
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Poor to Fair
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Excellent
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Resistance to
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Swelling in Lubricating Oil
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Good
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Excellent
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Fair
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Excellent
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Excellent
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Excellent
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Oil & Gasoline
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Good
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Excellent
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Fair
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Excellent
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Excellent
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Excellent
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Animal & Vegetable Oils
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Good
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Excellent
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Good to Excellent
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Excellent
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Excellent
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Excellent
|
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Water Absorption
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Very Good up to 100°C (212°F)
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Excellent
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Excellent
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Very Good
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Very Good
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Very Good
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Oxidation
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Outstanding
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Excellent
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Excellent
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Outstanding
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Outstanding
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Outstanding
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Ozone
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Outstanding
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Excellent
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Excellent
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Outstanding
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Outstanding
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Outstanding
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Sunlight Aging
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Outstanding
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Excellent
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Excellent
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Outstanding
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Outstanding
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Outstanding
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Heat Aging
(Upper Limit Cont. Service) |
165°C (329°F)
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235°C (455°F)
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205°C (401°F)
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290°C (554°F)
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Flame
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Poor
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Excellent
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Fair to Good
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Excellent
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Excellent
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Excellent
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Heat
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Excellent
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Outstanding
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Outstanding
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Outstanding
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Outstanding
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Very Outstanding
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Cold
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Good
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Outstanding
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Outstanding
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Fair to Good
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Good
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Good
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