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Rubber Compound Selection & Comparison Guide
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Properties Chemical Name
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(Polyisoprene)
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(Styrene
Butadiene)
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Isobutylene
Isoprene
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(Butadiene Acrylonitrile)
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Neoprene*
(Chloroprene)
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(polysiloxane)
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Hypalon*
Chlorosulfonated
polyethylene
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Propylene Diene
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Epichlorohydrin
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Chlorinated
Polyethylene
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Fluoro
Elastomer
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Urethane
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SAE J200-ASTM D-2000 Classification
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AA
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AA
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AA
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BF, BG, BK, CH
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BC, BE
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GE
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CE
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CA
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CH
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BC, BE, BC
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HK
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BG
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Tensile Strength (psi) Pure Gum
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>3000
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<1000
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>1500
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<1000
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>3000
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<1500
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>1500
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<1000
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<1000
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>1500
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1200
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3000-8000
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Tensile Strength (MPa) Pure Gum
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>20
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<7
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>10
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<7
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>20
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<10
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>10
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<7
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<7
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>10
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>8
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20-56
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Tensile Strength (psi) Black Loaded Stock
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>3000
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>2000
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>2000
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>2000
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>3000
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>3000
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>2500
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>200
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2500
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>2500
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1500-3000
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3000-8000
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Tensile Strength (MPa) Black Loaded Stock
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>20
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>14
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>14
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>14
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>20
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>10
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>17
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>14
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17
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>17
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10-20
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20-56
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Hardness Range (ºA Shore)
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30-90
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40-90
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40-75
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40-95
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40-95
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40-80
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40-95
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30-90
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40-90
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60-90
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50-90
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80A-75D
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Specific Gravity (Base Material)
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0.93
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0.94
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0.92
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1.00
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1.23
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1.24-2.05
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1.12
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0.86
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1.27-1.36
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1.16-1.32
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1.80
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1.02-1.20
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Adhesion to Metals
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Excellent
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Excellent
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Good
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Excellent
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Excellent
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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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Fair to Good
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Fair to Good
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Excellent
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Adhesion to Fabrics
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Excellent
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Good
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Good
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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
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Fair to Good
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Fair
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Good
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Very Good
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Tear Resistance
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Very Good
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Fair
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Good
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Fair
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Good
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Poor
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Fair
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Fair
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Fair to Good
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Fair
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Fair to Good
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Excellent
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Abrasion Resistance
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Excellent
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Good to Excellent
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Good
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Good
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Excellent
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Poor
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Excellent
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Good to Excellent
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Fair to Good
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Good
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Good
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Outstanding
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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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Good
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Fair to Good
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Fair
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Fair
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Good
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Poor
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Good
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Excellent
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Fair
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Rebound :
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Cold
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Excellent
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Good
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Poor
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Good
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Good
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Excellent
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Fair
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Excellent
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Good
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Fair
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Fair
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Good
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Hot
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Excellent
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Good
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Very Good
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Good
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Very Good
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Excellent
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Good
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Excellent
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Good
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Good
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Good
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Good
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Dielectric Strength
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Excellent
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Excellent
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Excellent
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Poor
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Very Good
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Good
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Very Good
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Outstanding
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Good
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Excellent
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Very Good
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Excellent
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Electrical Insulation
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Good to Excellent
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Good to Excellent
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Good to Excellent
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Poor
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Fair to Good
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Excellent
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Good
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Outstanding
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Good
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Good
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Good
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Good
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Permeability to Gases
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Fairly Low
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Fairly Low
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Very Low
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Low
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Low
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Fairly Low
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Low to Very Low
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Fairly Low
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Low to Very Low
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Very Low
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Very low
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Fairly Low
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Acid Resistance :
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Dilute
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Fair to Good
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Fair to Good
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Excellent
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Good
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Excellent
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Excellent
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Excellent
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Excellent
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Fair to Good
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Excellent
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Good to Excellent
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Fair
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Concentrated
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Fair to Good
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Fair to Good
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Good
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Good
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Good
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Fair
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Good
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Good
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Fair
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Good
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Excellent
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Poor
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Solvent Resistance :
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Aliphatic
Hydrocarbons
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Poor
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Poor
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Poor
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Excellent
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Fair to Good
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Poor
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Fair to Good
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Poor
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Excellent
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Good
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Excellent
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Fair to Good
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Aromatic
Hydrocarbons
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Poor
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Poor
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Poor
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Good
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Fair
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Poor
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Fair
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Poor
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Good
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Fair
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Excellent
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Poor
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Oxygenated (Keytones etc)
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Good
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Good
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Good
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Poor
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Poor to Fair
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Fair
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Poor to Fair
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Excellent
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Poor
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Fair
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Poor
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Poor
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Lacquer solvents
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Poor
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Poor
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Fair to Good
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Fair
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Poor
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Poor
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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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Poor to fair
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Poor
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Resistance To
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Swelling in lubricating oil
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Poor
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Poor
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Poor
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Very Good
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Good
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Fair
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Good
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Poor
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Excellent
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Good
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Excellent
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Good
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Oil and Gasoline
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Poor
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Poor
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Poor
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Excellent
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Good
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Fair
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Good
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Poor
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Excellent
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Good
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Excellent
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Good
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Animal & Vegetable Oil
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Poor to Good
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Poor to Good
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Very Good
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Very Good
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Good
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Good to Excellent
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Good
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Good to Excellent
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Excellent
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Good
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Excellent
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Good
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Water Adsorption
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Very Good
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Good to Very Good
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Very Good
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Good
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Good
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Excellent
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Good
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Excellent
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Good
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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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Good
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Fair
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Excellent
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Good
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Very Good
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Excellent
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Excellent
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Excellent
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Good
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Excellent
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Outstanding
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Excellent
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Ozone
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Poor
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Poor
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Excellent
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Fair
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Very Good
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Excellent
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Outstanding
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Outstanding
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Excellent
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Excellent
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Outstanding
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Excellent
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Sunlight Aging (UV)
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Poor
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Poor
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Very Good
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Poor
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Very Good
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Excellent
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Outstanding
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Outstanding
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Good
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Outstanding
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Outstanding
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Very Good
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Heat Aging
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Fair
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Fair to Good
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Very good
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Good
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Good
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Outstanding
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Very Good
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Excellent
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Very Good
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Very Good
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Outstanding
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Fair to Good
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Low Temperature
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Very Good
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Very Good
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Good
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Fair to Good
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Good
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Outstanding
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Good
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Excellent
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Good to Very Good
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Good
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Fair to Good
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Excellent
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Flame
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Poor
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Poor
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Poor
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Poor
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Good
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Fair to Good
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Good
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Poor to Good
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Poor to Fair
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Good
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Excellent
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Fair to Good
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