PROPERTY
고무재료특성
CR (Chloroprene Rubber)
CR Service Temperatures
From -40 °C to +100 °C
Chemical Resistance
- Mineral oil(eg.ASTM oil No.1)
- Silicone oil and grease
- Water and water solvent at low temperature
- Refrigerants
- Ammonia(NH3)
- Carbon dioxide(CO2)
- Improved ozone resistance, weather resistance, aging resistance compared with NBR
Not Compatible With
- Aromatic hydrocarbons
- Chlorinated hydrocarbons
- Polar solvents : ketone, acetone, ether, ester
- Mineral oils : ASTM oil No.2 and No.3
- Aliphatic Hydrocarbons : propane, butane, fuel
NBR (Acrylonitrile-Butadiene Rubber)
NBR Service Temperatures
From -40 °C to +100 °C
Chemical Resistance
- Aliphatic Hydrocarbons : propane, butane, petroleum oil, vegetable oils, mineral oil and greases, diesel fuel.
- HFA, HFB, HFC
- Diluted base, acid, alkali in low temperature
- Superior water resistance(up to 100 °C)
Not Compatible With
- Aromatic hydrocarbons
- Fuel incl. aromatic hydrocarbons
- Chlorinated hydrocarbons as trichloroethylene
- Polar solvents : ketone, acetone, acetic acid, ethylene ester
- Strong Acids
- Brake Fluids with glycol base
- Ozone, weather and atmospheric aging
HNBR (Hydrogenated Nitrile Rubber)
A hydrogenated version of nitrile rubber, HNBR, also known as HSN (highly saturated nitrile) is commonly used to manufacture o-rings for automotive air-conditioning systems. It has superior mechanical property and strength. HNBR exhibits satisfactory compatibility with automotive fuel system, hydrocarbon, diesel fuel, refrigerants R-11, R-12, R-134a, antioxidants, hydraulic oil, oil additive, ozone, diluted base and acid. It has good tensile strength.
HNBR Service Temperatures
From -40 °C to +150 °C
Chemical Resistance
- Aliphatic Hydrocarbons : propane, butane, petroleum oil, vegetable oils, mineral oil and greases.
- HFA, HFB, HFC fluids
- Hot water and steam up to 149 °C
- Diluted base, acid, alkali in low temperature
- Superior weather resistance and ozone resistance
Not Compatible With
- Trichloroethylene, chlorinated hydrocarbons
- Polar solvents : ketone ester
- Strong Acids
EPDM, EPM (Ethylene Propylene Diene Monomer Rubber)
EPDM Service Temperatures
From -50 °C to +125 °C
Chemical Resistance
- Hot water and steam up to 149 °C
- Brake fluids with glycol base
- Organic and inorganic acids
- Cleaning agent, soda and potassium alkalis
- Hydraulic fluids based on phosphate ester(HFD-R)
- Silicone oil and grease
Not Compatible With
- Mineral oil products : oil, greases, fuels
- Gasoline, kerosene
- Aromatic and Aliphatic hydrocarbons
- Halogenated solvents
- Concentrated acid
실리콘 (VMQ, PVMQ)
VMQ Service Temperatures
From -60 °C to +220 °C
Chemical Resistance
- Engine and transmission oil(ASTM oil No.1)
- Vegetable and animal oil and grease
- Brake oil(non-petroleum base)
- Fire-resistant hydraulic fluid : HFD-R, HFD-S
- Chlorinated aromatic hydrocarbon incl. flame resistance, refrigerants for transformer
- Water up to +100 °C
- Diluted salt solutions
- Superior ozone resistance, weather resistance, aging resistance
Not Compatible With
- Steam more than 120°C
- Acids and alkalis
- Chlorinated hydrocarbon : trichlorethylene
- Mineral oil
- Aliphatic hydrocarbons : propane, butane, fuel
- Hydrocarbon based fuel
- Aromatic hydrocarbons
불소실리콘 (FVMQ)
FVMQ Service Temperatures
From -60 °C to +175 °C
Chemical Resistance
- Engine and transmission oil(ASTM oil No.1)
- Vegetable and animal oil and grease
- Brake oil(non-petroleum base)
- Fire-resistant hydraulic fluid : HFD-R, HFD-S
- Chlorinated aromatic hydrocarbon incl. flame resistance, refrigerants for transformer
- Water up to +100 °C
- Diluted salt solutions
- Superior ozone resistance, weather resistance, aging resistance
Not Compatible With
- Steam more than 120°C
- Acids and alkalis
- Chlorinated hydrocarbon : trichlorethylene
- Mineral oil
- Aliphatic hydrocarbons : propane, butane, fuel
- Hydrocarbon based fuel
- Aromatic hydrocarbons
FKM, FPM (Viton)
Chemical Name
Fluoroelastomer, Fluorinated Rubber, Fluorocarbon Rubber, Fluorine Rubber.
Brand Name
Viton(DuPont-Dow Elastomer), Fluorel(3M), Dyneon(Dyneon Co.), Tecnoflon(Ausimont Corp.)
FKM Service Temperatures
From -25 °C to +250 °C
- Caution by varying duty more than 200 °C
- Minimum usable temperature varied by Vitons .
Chemical Resistance
- Second superior chemical resistance and heat resistance to Perfluoroelastomer in commercialized brands.
- Superior resistance to oil, fuel, lubricant, aliphatic, aromatic hydrocarbons, hydrocarbons.
Not Compatible With
- Oxygenated solvents, ester, ether, ketone, some amine, chlorosulfonic-acid.
FFKM, FFPM (KALEZ, PERLAST)
Perfluorelastomers (FFKM) have a fully fluorinated polymer backbone resulting in fluorine content of over 71%. As all of the bonds on the backbone are carbon-fluorine then FFKM materials offer the ultimate thermo-chemical resistance shown by the good long-term high temperature compression-set resistance. This is demonstrated by the good longterm, high-temperature, compressionset resistance.
Chemical resistance is second to none, with good performance in a broad variety of harsh environments:hot amines, steam, solvents, hydrocarbons etc. Traditionally, FFKM polymers have offered limited resistance to low temperatures, however, new polymer chemistry now offers FFKM grades capable of sealing at temperatures down to -40°C.
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