Rubber Properties and Primary Usage

NR  ( Natural Rubber ) 
■ A kind of rubber with high flexibility, tensile strength, tearing strength, and good resilience.
■ Better slip resistance and abrasion resistance.
■ The working temperature range is approximately to be -50℃ to 70℃, can temporarily worked to 100℃.
■ Not suggested to be used against UV and ozone.
■ Poor resistance to oils and heat.

IR  ( Polyisoprene ) 
■ With stable quality and similar properties to NR.
■ Has longer fatigue life than NR also with better electrical properties.
■ Flexibility and resilience are inferior to NR.
■ The working temperature range is approximately to be 50℃ to 100℃.

SBR  ( Styrene Butadiene Copolyme ) 
■ With stable quality and very similar properties to NR.
■ Good resistance to heat and abrasion, also with long fatigue life.
■ The working temperature range is approximately to be -55℃ to 100℃.
■ Inferior flexibility and tensile strength.
■ Not suggested to be used against UV and ozone.

BR  ( Polybutadiene ) 
■ Excellent resilience and abrasion resistance.
■ The working temperature range is approximately to be -70℃ to 70℃.
■ Inferior tensile strength and tearing strength.

NBR  ( Nitrle Rubber ) 
■ Often adopted in products such as packing and cushion pads.
■ Excellent resistance to oils, heat, and abrasion.
■ Good compressibility and tearing resistance capacity.
■ The working temperature range is approximately to be -55℃ to 100℃.
■ Not suggested to be used against UV and ozone, but the condition can be improved by blended with CR, CSM, or PVC.

NBR+PVC 
■ Can provide high resistance to ozone and oils by blended with NBR/PVC.
■ The working temperature range is approximately to be -35℃ to 100℃.

HNBR  ( Hydrogenated Nitrile ) 
■ With similar properties to NBR, but with better resistance to heat, ozone, chemicals, and better mechanical properties.
■ The working temperature range is approximately to be -40℃ to 150℃.
■ However, its price is expensive.

CR  ( Polychloroprene ) 
■ It shows great physical properties.
■ With good resistance to sunshine, ozone, oils, and weather conditions.
■ Non-hypergolic.
■ The working temperature range is approximately to be -40℃ to 100℃.
■ Inferior insulation to electricity, and thus can be used in low-volt cable protective covering.

CSM  ( Hypalon Polyethylene ) 
■ Good resistance to heat, medicaments, ozone, and abrasion.
■ Non-hypergolic.
■ The working temperature range is approximately to be -20℃ to 120℃.

IIR  ( Butyl Rubber ) 
■ Excellent resistance to chemicals and polar solvents, and ozone.
■ High insulation to electricity and cushioning ability.
■ The working temperature range is approximately to be -55℃ to 100℃.
■ Noted for its low permeability of air and steam.

ACM   ( Polyacrylate Rubber ) 
■ With good resistance to high temperature, oils, ozone, and aging.
■ The working temperature range is approximately to be -15℃ to 150℃.
■ Poor chemicals resistance and flexibility when exposed in low temperature.
■ Inferior resistance to water, steam, and low temperature environment.

PU  ( Urethane Rubber ) 
■ Oils, diesel fuels, and solvents resistance.
■ Great abrasion resistance, tensile strength, and flexibility.
■ The working temperature range is approximately to be -40℃ to 80℃.
■ Poor resistance to heat and alkali.

■ Some particular styles are easy to be hydrolyzed, but hydrolysis-resistant styles are inferior in oils resistance.

FLS   ( Fluorinated Silicone Rubber ) 
■ Oils, chemicals, and solvents resistance.
■ The working temperature range is approximately to be -70℃ to 200℃
■ However, its price is expensive.

FKM  ( Fluoro Carbon Rubber ) 
■ Excellent resistance to high temperature, ozone, weather conditions, mineral oils, diesel fuels, and many organic solvents and chemicals.
■ The working temperature range is approximately to be -26℃ to 230℃, some particular parts can be worked to -40℃.
■ This material is often used in automobile and aircrafts industries.
■ However, its price is expensive, especially for perfluoroelastomer(FFKM).

SI  ( Silicone Rubber ) 

■ Great resistance to weather conditions, heat, ozone and corona.
■ Widely used in the equipments or devices that need FDA certification, such as food and medical equipment industry.
■ Particular materials have the capacity of conductivity and fire-resistence.
■ Poor tensile strength, tearing strength and abrasion resistance.

EPM,EPDM  ( Ethylene Propylene Rubber )
■ Excellent resistance to ozone, sunshine, and weather environments.
■ Good insulation to electricity.
■ With greater resistance to ozone than CR and IIR.
■ Not effective in alkali, mild acidic and oxygenated solvents, and also brake fluid.
■ The working temperature range is approximately to be -55℃ to 120℃.