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Elastomer Selection

Common Name(s)
Designation
Composition
General Properties
General 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, cehemical, 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 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 dialectic 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 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 Acryiate
ABR, ACM
Acrylate-butadiene, copolymer of acrylic ester and acrylic haiide
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-update, 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.
Viton1, Fluoro-elastomer
FKM
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
Kalrez1
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 nitrite with ozone resistance.
Ketones, esters, aldehydes, chlorinated and nitro hydrocarbons.
EGH, 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 nitrite with ozone resistance.
Ketones, esters, aldehydes, chlorinated and nitro hydrocarbons.
Fluoro-silicone
 
 
 
Moderate or oxidizing chemicals, ozone, aromatic chlorinated solvents, bases.
Brake fluids, hydrazine, ketones.
AFLAS2
TFE/P
Copolymer Tetrafluroethylene and Propylene
Excellent heat resistance. High electrical resistivity. Oil resistance.
Strong acids, water, aminos, and caustics.
Polar solvents and aromatic fuels.

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