Rubber Compound Selection & Comparison Guide  

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