Common Name | ASTM Designation D-1418-79 | Composition | General Properties | General Chemical Resistance |
Resistant to: |
Attacked by: |
Neoprene |
CR |
Chloroprene |
Good Weathering Resistance.
Flame retarding.
Moderate resistance to pertroleum-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 resistance to heat, ozone and aging.
Very good resistance to abrasion.
|
Animal and vegetable oils, ozone, strong and oxidizing chemicals. |
Mineral oils and solvents, aromatic hydrocarbons. |
Buna-N |
NBR |
Nitrile-butadiene |
Excellent resistance to vegetable, animal and petroleum oils. |
Many hydrocarbons, fats, oils, greases, hydraulic fluids, chemicals. |
Ozone (except PVC blends), ketones, esters, aldehydes, chlorinated and nitro hydrocarbons. |
SBR |
SBR |
Styrene-butadiene |
Excellent abrasion resistance and good resistance to cutting, gouging and tearing.
Good heat resistance.
Not oil resistant.
|
Most moderate chemicals, wet or dry, organic acids, alcohols, ketones, aldehydes. |
Ozone, strong acids, fats, oils, greases, most hydrocarbons. |
Butyl |
IIR |
Isobutylene-isoprene |
Excellent resistance to heat.
Very good resistance to ozone and aging.
Good resistance to abrasion.
|
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.
Not oil resistant.
|
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. |
Butadiene rubber |
BR |
Polybutadiene |
A general purpose synthetic rubber.
Generally used in blends with natural or styrene-butadiene rubber.
Excellent abrasion resistance and low temperature flexibility.
High resilience.
|
Similar to SBR |
Similar to SBR |
|