POLYMER
DESCRIPTION AND GENERAL INFORMATION CHART 3 |
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|
Material |
Chemical
Group |
Generally
Resistant to |
Generally
Attacked by |
Thermosets |
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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 |
CO, ECO |
Epichlorohydrin |
Epichlorohydrin polymer and copolymer |
Similar to NBR with ozone resistance |
Ketones, esters, aldehydes, chlorinated
and nitro hydrocarbons |
CR |
Neopreneâ |
Chloroprene polymer |
Moderate chemicals and acids, ozone,
fats, greases, many oils and solvents |
Strong oxidizing acids, ketones, esters,
chlorinated, aromatic and nitro hydrocarbons |
CSM |
Hypalonâ |
Chlorosulfonated polyethylene |
Similar to Neoprene with improved acid
and ozone resistance |
Concentrated oxidizing acids, esters,
ketones, chlorinated, aromatic and nitro hydrocarbons |
CM, CPE |
Tyrinâ |
Chlorinated polyethylene |
Similar to Neoprene with improved acid
and ozone resistance |
Concentrated oxidizing acids, esters,
ketones, chlorinated, aromatic and nitro hydrocarbons |
T |
Polysulfide |
Organic Polysulfide polymer |
Ozone, oils, solvents, thinners, esters,
ketones, aromatic hydrocarbons |
Mercaptons, chlorinated and nitro
hydrocarbons, esters, amines, hetercocyclics |
SI, VQM |
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,
aromatics chlorinated solvents, bases |
Brake fluids, hydrazine, ketones |
TFE/P |
Tetrafluoroethylene-propylene |
Fluorinated copolymer |
Steam, amines and amine corrosion
inhibitors, caustics, high pH media. wet sour gas, oil |
Aromatic hydrocarbons, chlorinated
solvents, ethers, limited in low temperatures |
ACM |
Polyacrylate |
Copolymer of acrylic ester and acrylic
halide |
Ozone, extreme pressure, lubricants, hot
oils, petroleum solvents, animal and vegetable fats |
Water, alcohol, glycols, alkali, esters,
aromatic hydrocarbons, halogenated
hydrocarbons, phenol |
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 nitrogen containing compounds |
FKM#2 |
Fluoroelastomer |
Standard or
special type fluorocarbon. Typically
>66% fluorine |
Same as FKM #1.
Greater chemical resistance
|
Ketones, low molecular weight esters and
nitrogen containing compounds |
|
Zalakâ |
Proprietary fluorocarbon |
Greater resistance to acid, base,
alcohol, amine and esters than FKM |
Nitrogen containing compounds |
FFKM |
Perfluoroelastomer |
Fully fluorinated fluorocarbon |
Best fluid resistance of any elastomer |
Fluorocarbon containing refrigerants
cause minor effects |
Thermoplastics
|
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AU, EU |
Urethane |
Urethane polymer |
Ozone, hydrocarbons, moderate chemicals,
fats, oils and greases |
Concentrated acids, esters, ketones,
chlorinated and nitro hydrocarbons and hot water |
PTFE |
Polytetrafluoroethylene |
|
Nearly inert |
Metallic sodium, fluorocarbon containing
refrigerants cause minor swelling |
UHMW |
Ultra High Molecular Weight |
Polyethylene |
Water, oils, weak acids, alcohols |
Ethers, ozone, strong acids, toluene, turpentine,
vinyl acetate and chlorinated solvents |
PA |
Nylon |
Polyamide |
Oils, esters, ketones hydrocarbons |
Hydroscopic, acids and alcohols |
PK |
|
Polyketone |
|
|
PEEK |
Polyetheretherketone |
|
Alcohols, aldehydes, ketones, bases,
esters, hydrocarbons, oils. |
Strong acids, halogens, phenol and
sodium |
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Neoprene, Hypalon, Tyrin and Zalak are registered trademarks of DuPont Dow