| |
material |
Chemical
group |
Generally
Resistant to |
Generally
Attacked by |
| NR,
IR |
Natural rubber,
Isoprene |
Polyisoprene |
Most moderate
wet or dry chemicals, organic acids, alcohols, ketones, aldehydes |
Ozone, strong
acids, fats, oils, greases, most hydrocarbons |
| SBR, BR |
Butadiene,
Styrene butadiene |
Styrene, Butadiene
Copolymer, Polybutadiene |
Similar to
natural rubber |
Similar to
natural rubber |
| IIR |
Butyl |
Isobutylene,
isoprene, polymer |
Water and
Steam |
Petroleum
solvents, coal, tar, solvents, aromatic hydrocarbons |
| EPM, EPDM |
Ethylene propylene |
Ethylene Propylene
copolymer and terpolymer |
Water, Steam,
and brake fluids |
Mineral Oils
and solvents, aromatic hydrocarbons |
| NBR |
Nitrile |
Butadiene,
Acrylonitrile copolymer |
Many hydrocarbons,
fats, oils, greases, hydraulic fluids, chemicals |
Ozone, ketones,
esters, aldehydes, chlorinated and nitro hydrocarbons |
| HNBR |
Hydrogenated
nitrile |
Butadiene,
Acrylonitrile copolymer |
Similar to
NBR but with improved chemical resistance and higher service temperature |
Ozone, ketones,
esters, aldehydes, chlorinated and nitro hydrocarbons |
| CO1 ECO |
Epichlorohydrin |
Epichlorohydrin
polymer and copolymer |
Similar to
nitrile with ozone resistance |
ketones, esters,
aldehydes, chlorinated and nitro hydrocarbons |
| CR |
Neoprene |
Chloroprene
polymer |
Moderate chemicals
and acids, ozone, oils, fats, greases, many oils, and solvents |
Strong oxidizing
acids, esters, ketones, chlorinated, aromatic and nitro hydrocarbons |
| CSM |
Hypalon® |
Chlorosulfonated
polyethylene |
Similar to
Neoprene with improved acid and ozone resistance |
Concentrated
oxidizing acids, esters, ketones, chlorinated, aromatic and nitro
hydrocarbons |
| CM CPE |
Tyrin® |
Chlorinated
polyethylene |
Similar to
Neoprene with improved acid and ozone resistance |
Concentrated
oxidizing acids, esters, ketones, chlorinated, aromatic and nitro
hydrocarbons |
| AU EU |
Urethane |
Urethane polymer |
Ozone, hydrocarbons,
moderate chemicals, fats, oils, greases |
Concentrated
acids, ketones, esters, chlorinated and nitro hydrocarbons |
| Si VMQ |
Silicone |
Organic silicone
polymer |
Moderate or
oxidizing chemicals, ozone, concentrated sodium hydroxide |
Many solvents,
oils, concentrated acids, dilute sodium hydroxide |
| FSI FVMQ |
Fluorosilicone |
Fluorinated
organic silicone polymer |
Moderate or
oxidizing chemicals, ozone aromatic chlorinated solvents, bases |
Brake fluids,
hydrazine, ketones |
| FKM
#1 |
Fluoroelastomer |
Standard
fluorocarbon dipolymer 66% fluorine |
All
aliphatic, aromatic and halogenated hydrocarbons, acids, animal and
vegetable oils |
Ketones,
low molecular weight esters and alcohols and nitro-containing compounds. |
| FKM
#2 |
Fluoroelastomer |
Standard
or specialty type fluorocarbon. Typically, >66% fluorine |
Same
as FKM #2. Greater chemical resistance |
Ketones,
low molecular weight esters and nitro-containing compounds |
