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Rubber Properties

Rubber Types and their Properties

The chart listed below is intended to help you with the material selection stage of designing rubber parts / products. Rubber compounding is adding new possibilities every day in the technical field, compounding basic rubbers or elastomers  mixed with various chemicals and ingredients (and even with each other) to obtain desired physical properties you need for your product.

A wide variety of basic polymers (rubbers) are available, and a literally infinite array of compounds exhibiting unique physical properties as well as chemical, fluid, and temperature resistances are possible. This chart, therefore, deals only with very general features of the most common basic rubber or elastomer compounds, but more specific information is available upon request.

You will find below rubbers with their common names, designations, general properties with what the basic resistance to and chemicals it does not have resistance to.

Common Name(s)

Designation

Composition

General Properties

Basic Chemical Resistance

Resistant to:

Attacked by:

Neoprene

CR

Chloroprene

Good Weathering Resistance. Flame retarding. Moderate resistance to petroleum-based fluids.

Moderate chemicals and acids, ozone, oils, fats, greases, many oils, and solvents.

Strong oxidizing acids, esters, ketones, chlorinated, aromatic and nitro hydrocarbons.

EPDM

EPDM, EPM

Ethylene-propylene- diene; Ethylene-propylene

Excellent ozone, chemical, and aging resistance. Poor resistance to petroleum-based fluids.

Animal and vegetable oils, ozone, strong and oxidizing chemicals.

Mineral oils and solvents, aromatic hydrocarbons.

Buna-N

NBR

Nitrile-butadiene

Excellent resistance to petroleum-based fluids. Good physical properties.

Many hydrocarbons, fats, oils, greases, hydraulic fluids, chemicals.

Ozone (except PVC blends), ketones, esters, aldehydes, chlorinated and nitro hydrocarbons.

Silicone

Q, Si

Polysiloxane

Excellent high and low temperature properties. Fair physical properties.

Moderate or oxidizing chemicals, ozone, concentrated sodium hydroxide.

Many solvents, oils, concentrated acids, dilute sodium hydroxide.

SBR

SBR

Styrene-butadiene

Good physical properties and abrasion resistance. Poor resistance to petroleum-based fluids.

Most moderate chemicals, wet or dry, organic acids, alcohols, ketones, aldehydes.

Ozone, strong acids, fats, oils, greases, most hydrocarbons.

Butyl

IIR

Isobutene-isoprene

Very good weathering resistance. Excellent dialectric properties. Low permeability to air. Good physical properties. Poor resistance to petroleum-based fluids.

Animal and vegetable fats, oils, greases, ozone, strong and oxidizing chemicals.

Petroleum, solvents, coal tar solvents, aromatic hydrocarbons.

Natural, Gum Rubber

NR

Isoprene, natural

Excellent physical properties including abrasion and low temperature resistance. Poor resistance to petroleum-based fluids.

Most moderate chemicals, wet or dry, organic acids, alcohols, ketones, aldehydes.

Ozone, strong acids, fats, oils, greases, most hydrocarbons.

Isoprene, Polyisoprene

IR

Isoprene, synthetic

Similar to natural rubber.

Similar to natural rubber.

Similar to natural rubber.

Hypalon

CSM

Chloro-sulfonyl- polyethylene

Excellent ozone, weathering, and acid resistance. Good and abrasion and heat resistance. Fair resistance to petroleum-based fluids.

Similar to Neoprene with improved acid resistance.

Concentrated oxidizing acids, esters, ketones, chlorinated, aromatic, and nitro hydrocarbons.

Acrylic, Poly Acrylate

ABR, ACM

Acrylate-butadiene, copolymer of acrylic ester and acrylic halide

Excellent resistance to high temperature, oil and air, ozone, and weathering. Poor low temperature properties. Not recommended for water service.

Ozone, extreme pressure, lubricants, hot oils, petroleum solvents, animal and vegetable fats.

Water, alcohols, glycols, alkali, esters, aromatic and halogenated hydrocarbons, phenol.

Urethane

AU, EU

Polyethylene-apdate, Poly (oxy-1, 4, butylene) ether

Good aging and excellent abrasion, tear, and solvent resistance. Poor high temperature properties.

Ozone, hydrocarbons, moderate chemicals, fats, oils, greases.

Concentrated acids, ketones, esters, chlorinated and nitro hydrocarbons.

Chlorinated- polyethylene

CPE

Chlorinated- polyethylene

Excellent ozone and weathering resistance; good heat resistance. Moderate resistance to petroleum-based fluids.

 

 

Viton ®  Fluoro-elastomer

FPM

Hexaflouropropylene- vinylidene flouride

Excellent oil and air resistance both at low and high temperatures. Very good chemical resistance.

All aliphatic, aromatic and halogenated hydrocarbons, acids, animal and vegetable oils.

Ketones, low molecular weight esters and nitro containing compounds.

Butadiene rubber

BR

Polybutadiene

Excellent abrasion resistance and low temperature properties. High resilience.

Similar to SBR

Similar to SBR

Kalrez ®

AFMU

Tetraflouroethylene- flouronitrosomethane- perflourobutyric acid

Excellent chemical resistance. Excellent high and low temperature properties.

 

 

Hydrin, Herchlor

CO

Polychloromethyl oxirane

Excellent oil and ozone resistance. Good flame resistance and low permeability to gases. Fair low temperature properties.

Similar to nitrile with ozone resistance.

Ketones, esters, aldehydes, chlorinated and nitro hydrocarbons.

ECH, Hydrin, Herchlor

ECO

Ethylene oxide and chloromethyl oxirane

Good low temperature properties. Excellent oil and ozone resistance. Fair flame resistance. Low permeability to gases.

Similar to nitrile with ozone resistance.

Ketones, esters, aldehydes, chlorinated and nitro hydrocarbons.

Fluoro-silicone

FSi

Flourocarbon

 

Moderate or oxidizing chemicals, ozone, aromatic chlorinated solvents, bases.

Brake fluids, hydrazine, ketones.

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