Rubber Elastomer Properties

The rubber properties chart below provides general information for various common elastomeric compounds and very general features of the most common elastomers.

Rubber compounding is a broad field. Basic elastomers are mixed with a variety of chemicals and ingredients to obtain 
desired physical properties. Many basic polymers are available that can yield compounds with unique physical properties.

Contact Us for additional rubber extrusions information, or send us your custom rubber extrusion profile requirements.

 

Common Name Designation2 Composition2 General Properties1 General Chemical Resistance3
Resistant to: Attacked by:
Butyl IIR Isobutyleneisoprene Very good weathering resistance Excellent dielectric properties Low permeability to air Good flex properties Poor resistance to petroleumbased fluids Animal and vegetable fats, oils, greases, oxygenated solvents, alkalis, ozone, strong and oxidizing chemicals, silicone fluids and greases, ammonia, phosphate ester type hydraulic fluids Petroleum oils, fluids, and solvents; coal, tar, and diesterbased lubricants and solvents; aliphatic and aromatic hydrocarbons
EPDM EPDM, EPM EthylenePropyleneDiene Modified Excellent ozone, chemical, weather, UV, and aging resistance Poor resistance to petroleumbased fluids Animal and vegetable oils, ozone, strong and oxidizing chemicals, alkalis, brake fluids, phosphate ester type hydraulic fluids Mineral oils and solvents; petroleum oils, fluids, or solvents; aliphatic and aromatic hydrocarbons
Natural Rubber NR Isoprene, natural Excellent physical properties including abrasion and low temperature resistance Poor resistance to petroleumbased fluids Most moderate chemicals, wet or dry, organic acids, alcohols, ketones, aldehydes Ozone, strong acids, fats, oils, fuels, solvents, petroleum derivatives, hydraulic fluids, greases, most hydrocarbons
Neoprene CR Chloroprene Good weathering resistance, resilience, and abrasion strength Flame retarding Moderate resistance to petroleumbased fluids Moderate chemicals and acids, ozone, oils, fats, gasoline, greases, solvents, petroleum oils, animal and vegetable oils, refrigerants, steam, carbon dioxide Strong oxidizing acids, esters, ketones, chlorinated, aromatic, and nitro hydrocarbons
Nitrile (BunaN) NBR Nitrilebutadiene Excellent resistance to petroleumbased fluids Good physical properties such as resistance to tear, abrasion, and heat aging Many hydrocarbons, fats, oils, gasoline, solvents, mineral and vegetable oils, fuels, greases, hydraulic fluids, chemicals Ozone (except PVC blends), ketones, esters, aldehydes, chlorinated and nitro hydrocarbons
Polyisoprene IR Isoprene, synthetic Excellent resilience Characteristics equal to, or similar to, those of natural rubber Tensile strength is slightly lower than the tensile strength of natural rubber Most moderate chemicals, wet or dry, organic acids, alcohols, ketones, aldehydes Ozone, strong acids, fats, oils, fuels, solvents, petroleum derivatives, hydraulic fluids, greases, most hydrocarbons
SBR SBR Styrene Butadiene Good electrical insulation and resistance to alcohol, oxygenated solvents, and mild acids Similar properties to natural rubber, but has superior lowtemp flexibility, heat aging properties, and resistance to water, heat, and abrasion Abrasion resistance to petroleumbased fluids Most moderate chemicals, wet or dry, organic acids, alcohols, ketones, aldehydes Ozone, strong acids, fats, oils, fuels, greases, most hydrocarbons
Silicone Q, Si Polysiloxane Excellent high and low temperature properties Excellent vibration damping and maintains its dielectric strength Poor tensile, tear, and abrasion resistance Generally odorless and nontoxic Good fatigue resistance, flex resistance, and elongation Moderate or oxidizing chemicals, ozone, oxygen, UV light, moisture, fungus, concentrated sodium hydroxide Many solvents, oils, concentrated acids and alkalines, fuels, dilute sodium hydroxide, hydrocarbons, steam