Polymer Comparision Chart

 
Properties
Natural
Isoprene
Nitrile
N.B.R
Neoprene
C.R.
Hypalon
Butyle
EPDM
Silicone
Viton
Fluoro
Carbon
Poly urethane
Hardness Rang
(Durometer)
30-90 20-10 30-95 40-95 35-85 40-90 25-85 55-95 60-90+
Tensile Strength (PSI) 3000 3500 3000 2500 2000 3000 1100 1800 4000
Specific Gravity 0.93 1.00 1.23 1.12-1.2 0.92 0.86 0.98 1.85 1.06
Specific Gravity
(Base Material)
0.93 1.00 1.23 1.12-1.2  0.92 0.86 0.98 1.85 1.06
Vulcanizing Properties E E E E F E E G E
Adhesion to metals E E E E F E F G E
Adhesion to Fabrics E E E G F G F E E
Tear Resistance G F G F G G P F E
Abrasion Resistance E E E E G E P G O
Compression Set G G G G E G G G F
Electrical Insulation G P G G E E E G G
Permeability to Gases F F P P P F G P F
Acid Resistance G G E F F E G E F
Dilute Concentrated G G G G G E P E P

Solvent Resistance P E G G P P F E E
Alipatic Hydro Carbon P G G F P P F E F
Aromatic Hydro Carbons G P F P F G F P P
Oxygenated
(Ketone, etc) 
P F P P F P P P  
Laquer Solvents                   

Resistance To P G G E P P F E E
Swelling in Lubracating P G G G P P F E E
Oil P G G G G G F E E
Oil & Gasoline G E G G E G E G GP1000C
Animal & Vegebale Oil G F E F F E E O E
Water Absorption F P E O F O E O E
Oxidation P P G O F O G O G
Ozone                   
Sunlight Ageing                  

Heat Ageing (Upp)  750C 900C 950C 1350C 1100C 1450C 1800C 2050C 850C
Cont. Service P P G G P P F E F
Flame G G G E G E E O G
Heat E F G G G E E G E
Cold                   
 
G - GOOD
P - POOR
E - EXCELLENT
F - FAIR
O - OUTSTANDING

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