Material ReferenceThe chart below is intended to help in the material selection stage of designing rubber parts / products. Rubber compounding isa very broad and technical field, since basic rubbers or elastomers are mixed with various chemicals and ingredients (and evenwith each other) to obtain desired physical properties.

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

CommonName(s)

Designation(2)

Composition Min/Max TempOperatingRange (F) (5)

General Properties(1) General Chemical Resistance (3)

Resistant to: Attacked by:

Neoprene CR Chloroprene -30 F / 212 F Good WeatheringResistance. Flameretarding. Moderateresistance topetroleum-basedfluids.

Moderatechemicals andacids, ozone, oils,fats, greases,many oils, andsolvents.

Strong oxidizingacids, esters,ketones,chlorinated,aromatic and nitrohydrocarbons.

EPDM EPDM, EPM Ethylene-propylene-diene; Ethylene-propylene

-40 F / 300 F Excellent ozone,chemical, and agingresistance. Poorresistance topetroleum-basedfluids.

Animal andvegetable oils,ozone, strong andoxidizingchemicals.

Mineral oils andsolvents, aromatichydrocarbons.

Buna-N NBR Nitrile-butadiene -30 F / 250 F Excellent resistance topetroleum-basedfluids. Good physicalproperties.

Manyhydrocarbons, fats,oils, greases,hydraulic fluids,chemicals.

Ozone (except PVCblends), ketones,esters, aldehydes,chlorinated and nitrohydrocarbons.

Silicone Q, Si Polysiloxane -80 F / 420 F Excellent high and lowtemperatureproperties. Fairphysical properties.

Moderate oroxidizingchemicals, ozone,concentratedsodium hydroxide.

Many solvents, oils,concentrated acids,dilute sodiumhydroxide.

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SBR SBR Styrene-butadiene -20 F / 212F Good physicalproperties andabrasion resistance.Poor resistance topetroleum-basedfluids.

Most moderatechemicals, wet ordry, organic acids,alcohols, ketones,aldehydes.

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

Butyl IIR Isobutene-isoprene -60 F / 250 F Very good weatheringresistance. Excellentdielectric properties.Low permeability toair. Good physicalproperties. Poorresistance topetroleum-basedfluids.

Animal andvegetable fats, oils,greases, ozone,strong andoxidizingchemicals.

Petroleum, solvents,coal tar solvents,aromatichydrocarbons.

Natural, GumRubber

NR Isoprene, natural -60 F / 220 F Excellent physicalproperties includingabrasion and lowtemperatureresistance. Poorresistance topetroleum-basedfluids.

Most moderatechemicals, wet ordry, organic acids,alcohols, ketones,aldehydes.

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

Hypalon (4) CSM Chloro-sulfonyl-polyethylene

-40 F / 320 F Excellent ozone,weathering, and acidresistance. Good andabrasion and heatresistance. Fairresistance topetroleum-basedfluids.

Similar toNeoprene withimproved acidresistance.

Concentratedoxidizing acids,esters, ketones,chlorinated,aromatic, and nitrohydrocarbons.

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

-40 F / 175 F Good aging andexcellent abrasion,tear, and solventresistance. Poor hightemperatureproperties.

Ozone,hydrocarbons,moderatechemicals, fats,oils, greases.

Concentrated acids,ketones, esters,chlorinated and nitrohydrocarbons.

Viton ® (4),Fluoro-elastomer

FPM Hexaflouropropylene-vinylidene fluoride

- 10 F / 400 F Excellent oil and airresistance both at lowand hightemperatures. Verygood chemicalresistance.

All aliphatic,aromatic andhalogenatedhydrocarbons,acids, animal andvegetable oils.

Ketones, lowmolecular weightesters and nitrocontainingcompounds.

Fluoro-silicone FSi Fluorocarbon -60 F / 350 F Offers superior heatresistance. resistant tocold, oils and solventsof fluorinated rubber.Good for specialapplications wheregeneral resistance tooxidizing chemicals,aromatic andchlorinated solventbases are required. Narrower Temp rangethan silicone but betterfluid resistance

Moderate oroxidizingchemicals, ozone,aromaticchlorinatedsolvents, bases.

Brake fluids,hydrazine, ketones.

HydrogenatedNitrile

HNBR HydrogenatedAcrylonitrile-butadienerubber

-22 F / 300 F Excellent heat and oilresistance, improvedfuel and ozoneresistance(approximately 5X)over Nitrile Goodabrasion resistance.Decreased elasticityat low temperatureswith hydrogenationover standard nitrile.

Manyhydrocarbons,transmission fluids,refrigerants, dilutedacids, hydraulicfluids, silicone oils,vegetable andanimal fats andoils, water andsteam.

Chloratedhydrocarbons,keytones, strongacids.

CarboxylatedNitrile

XNBR Carboxylated Nitrile -20 F / 250 F Excellent Abrasionand Tear Resistance,Fair Ozone andSteam Resistance.Poor to Fair Sunlightand Outdoors. Goodto Excellent OilResistance.

Manyhydrocarbons, fats,oils, greases,hydraulic fluids,chemicals.

Ozone (except PVCblends), ketones,esters, aldehydes,chlorinated and nitrohydrocarbons.

Footnotes

From the "Sheet Rubber Handbook - Gasket and Packing Materials" publication #IP-40 of the Rubber ManufacturersAssociation (RMA).

1.

ASTM D 1418-792.1979 Yearbook of the Los Angeles Rubber Group, Inc.3."Viton" and "Kalrez" are registered trademarks of E.I. Dupont, Inc.4.The temperature range is determined by the base elastomer used. This chart depicts the maximum temperature range5.

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for each elastomer. The temperature range for a specific compound may not reach these maximum limits. Highertemperatures may be considered if exposure is short or intermittent.

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