Comparison Charts
   
 
COMPARATIVE PROPERTIES OF NATURAL & VARIOUS SYNTHETIC RUBBERS
PROPERTIES NATURAL
RUBBER		 Nitrile ADIPRENE
polyurethane		 HYPALON
choro-
sulfonated
polyuthyiene		 NORDEL
ethylene-
propylene-
diene
polymer		 NEOPRENE
chloroprene		 Silicone VITON
co-polymer
of vinylidene
fluoride and
hexafluoro-
propylene
HARDNESS RANGE
(durometere A & D)		 30 - 90 A 30 - 90 A 60.99 + A
(up to 80 D)		 40 - 95 A 40 - 90 A 40 - 95 A 30 - 85 A 60 - 95 A
TENSILE STRENGTH
(psi) -  pure gum		 Over 3000 Over 2000 psi Over 4000 Over 2500 --- Over 3000 Over 500 psi Over 2000
Black loaded stocks Over 3000 Over 3000 psi --- Over 3000 Over 3000 Over 3000 Over 1400 psi Over 2000
SPECIFIC GRAVITY
- (Base Material)		 0.93 0.98 1.06 1.12 - 1.28 0.86 1.23 - 1.85
VULCANIZING PROPERTIES Excellent Excellent Excellent Excellent Excellent Excellent Excellent Good
ADHESION TO METALS Excellent Excellent Excellent Excellent Good to
Excellent		 Excellent Poor Good to
Excellent
ADHESION TO FABRICS Excellent Excellent Excellent Good Good Excellent Poor Good to
Excellent
TEAR RESISTANCE Good Excellent Excellent Fair Good Good Poor Fair
ABRASION RESISTANCE Excellent Excellent Outstanding Excellent Excellent Excellent Poor Good
COMPRESSION SET Good Good Fair Fair Good Fair to Good Good Fair to Good
REBOUND
-  Cold		 Excellent Good Poor to V.L.Temp Good Very Good Very Good

Fair to Good

 Good
-  Hot Excellent Good Good at R.T. Good Very Good Very Good

Fair to Good

 Excellent
DIELECTRIC STRENGTH Excellent Fair to Good Excellent Excellent Excellent Good Excellent Good
ELECTRICAL INSULATION Good to Excellent Fair to Good Fair to Good Good Excellent Fair to Good Excellent Fair to Good
PERMEABILITY TO GASES Fair Excellent Fair Low to V.L. Fair Low Poor Very low
ACID RESISTANCE
-  Dilute		 Fair to Good Good Fair Excellent Excellent Excellent Good Excellent
Concentrated Fair to Good Fair to Good Poor Very Good Excellent Good Good Excellent
SOLVENT RESISTANCE
-Aliphatic hydrocarbons		 Poor Good Excellent Good Poor Good Good Excellent
Aromatic hydrocarbons Poor Excellent Fair to Good Fair Poor Fair Good Excellent
-Oxygenated (Ketones, etc.) Fair to Good Poor Poor Poor Good Poor Good Poor
- Lacquer solvents Poor Good Poor Poor Poor Poor Good Poor
RESISTANCE TO :
Swelling in lubricating oil		 Poor Good Excellent Good to Excellent Poor Good Good Excellent
Oil and gasoline Poor Very Good Excellent Good Poor Good Good Excellent
Animal and Vegetable oils Poor to Good Poor Excellent Good Good Good Good Excellent
Water absorption Very Good Good Good at R.T. Poor at 212oF. Very Good Very Good Good Excellent Very Good
Oxidation Good Good Excellent Excellent Excellent Excellent Excellent Outstanding
Ozone Fair Good Excellent Outstanding Outstanding Excellent Outstanding Outstanding
Sunlight aging Poor Good Good Outstanding Outstanding Very Good Outstanding Very Good
Heat aging Good Good Good Excellent Excellent Excellent Outstanding Outstanding
Flame ** Poor Poor to Good Fair (Will melt) Good Poor Very Good Poor Excellent
Heat Good Good Good Excellent Excellent Very Good Excellent Outstanding
Cold Excellent Fair to Good Excellent Good Excellent Good Excellent Good
 
CHEMICAL RESISTANCE
Chemical Adipren Hypalon Hytrel Neopren Nordel FKM Chemical Adipren Hypalon Hytrel Neopren Nordel FKM
Acetone C B B B A C Gasoline B B A B B-C A
Acetylene - B A B A A Hydrochloric acid, 37% - C(200oF) - C(200oF) - B(230oF)
Acetic acid, 30% C A A A A C Hydrochloric acid, 75% C A X B C B(158oF)
Ammonium chloride solutions A A A A A A Hydrogen A A A A A A
Aluminum chloride solutions T A T A A A Hydrogen peroxide 90% - - - - - C(270oF)
ASTM oil : 1 A(158oF) A A(300oF) A C A(300oF) Kerosene B B T C C A(158oF)
Benezene C C B C C B(158oF) Lubricating oils B B(158oF) A B(158oF) C A(158oF)
Boric acid soultions A A(200oF) A A(158oF) A A Mercury A A A A A A
Butane A A A A B A Methy1 ethy1 ketone C C A C A C
Butylacetate C C B C B C Nitric acid, 70% - - - - - B(100oF)
Calcium   chloride solutions A A A A A A Oleum 20-25% C B C C C A
Carbon dioxide A A(200oF) A A T A Phenol - - - - - B(300oF)
Carbon monoxide A A(200oF) A A T T Phosphoric acid, 60% A A(200oF) X A A A(212oF)
Chlorine gas, dry X B X B A A(212oF) SAE : 10 oil A(158oF) C A C C A
Chlorine gas, wet C B X C B A Sea Water A A A A A A
Chloroform C C C C C A Sodium hydroxide 73% C A(280oF) X A A C
Chlorosulfonic acid C C C C C C Sodium peroxide solutions C A(200oF) - A A A
Dioctyl phthalate C C A C B B Steam (See Water) C A B(212oF) A A(350oF) B(300oF)
Ethyl acetate C C B C A C Sulfuric acid 95% C A-B C C B A
Ethyl alcohol C A(200oF) A A(158oF) A A Toluene C C B C C B(100oF)
Ehylene glycol B A(200oF) A A(158oF) A A(250oF) Water A(122oF) A(158oF) A(158oF) A(158oF) A(158oF) A(158oF)
FREON - 11 B A T A-B C B Xylene C C B C C A
 
RATING KEY

A - Fluid has little or no effect                                               T - No data - likely to be compatible
B - Fluid has minor to moderate effect                                  X - No Data - not likely to be compatible 
C - Fluid has reverse effect
 
 
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