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NATURAL RUBBER

DESCRIPTION
Natural Rubber, or NR, was the first commercially viable elastomer ever developed and is still the only non-synthetic rubber in widespread use. Natural rubber currently accounts for almost 40% of the world's elastomer consumption, as it is frequently blended with other rubbers to derive an ideal combination of properties. Derived from a liquid of the Hevea tree, NR latex is a low cost material that may contain relatively high levels of organic and inorganic impurities. It is ideal for applications that require good resistance to abrasion, gouging and cut growth. Also, because it experiences little heat buildup during flexing, it is also commonly specified when shock and dynamic load requirements are deemed critical. Natural rubber is tough, long lasting and can be compounded for service at temperatures as low as -65°F. It is also easily bonded to metal and fabrics.
COMPOSITION
Coagulated, dried rubber derived from the latex of the Hevea Brasiliensis tree.  Low to medium density.

PHYSICAL PROPERTIES* Excellent Good Fair Poor
Abrasion resistance      
Compression Set      
Elongation      
Flame resistance      
Gas permeability      
Low temperature flexibility      
Tear resistance      
Tensile strength    

CHEMICAL RESISTANCE* Excellent Good Fair Poor
Air      
Alcohols      
Dilute acids and bases            
Gasoline      
Hydrocarbon solvents      
Oil      
Oxidation      
Ozone      
Radiation      
Steam    
Sunlight    
Water      

OPERATING TEMPERATURE
-60 to 225 °F

*Excellent, good, fair and poor are intended to serve as general guidelines only. Actual testing in the application environment is always recommended.