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Rubber Orings Material Reference
Aug 24, 2018

The chart below is intended to help in the material selection stage of designing rubber parts / products. Rubber compounding is a very broad and technical field, since basic rubbers or elastomers are mixed with various chemicals and ingredients (and even with 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 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.



Common Designation Composition

Min/Max 

Temp 

Operating Range (°C) 

General PropertiesGeneral Chemical Resistance
NameResistant to:Attacked by:
NeopreneCRChloroprene -60°C / 90°C

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.

EPDMEPDM, EPM

Ethylene-propylene-

diene; Ethylene-propylene

 -50°C / 150°C

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-NNBRNitrile-butadiene -40°C / 120°C

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.

SiliconeQ, SiPolysiloxane -70°C / 220°C

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.

SBRSBRStyrene-butadiene -50°C / 100°C

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.

ButylIIRIsobutene-isoprene -50°C / 120°C

Very good weathering resistance. Excellent dielectric propertie.

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

NRIsoprene, natural -60°C /90°C

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.

Viton ® (4), 

Fluoro-elastomer

FPM

Hexaflouropropylene-

vinylidene fluoride

 - 20°C / 200°C

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.

Fluoro-siliconeFSiFluorocarbon -60°C / 175°C

Offers superior heat resistance. resistant to cold, oils and solvents of fluorinated rubber. Good for special applications whee 

general resistance to oxidizing chemicals, aromatic and chlorinated solvent bases are required.  Narrower Temp range than silicone but better fluid resistance

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

Brake fluids, 

hydrazine, 

ketones.

Hydrogenated Nitrile

HNBR

Hydrogenated

Acrylonitrile-butadiene rubber

 -40°C / 150°C

Excellent heat and oil resistance, improved fuel and ozone 

resistance (approximately 5X) over Nitrile Good abrasion resistance. Decreased elasticity at low temperatures with hydrogenation over standard 

nitrile.

Many hydrocarbons, transmission fluids, refrigerants, diluted acids, hydraulic fluids, silicone oils, vegetable and animal fats and oils, water and steam.

Chlorated hydrocarbons, 

keytones, strong acids.