author
Bobby Brown
Cập nhật 2016-03-03
FEPM Material Characterization

Contents


What is FEPM

  • FEPM (Tetrafluoroethylene Propylene Monomer) is a type of elastomer that stands out for its excellent heat and chemical resistance.
    It maintains its integrity and performance at temperatures up to approximately 230°C (446°F), and in some cases, can endure higher temperatures for short durations.
  • FEPM shows exceptional resistance to a wide range of chemicals, including acids, bases, and solvents. This resistance makes it suitable for applications in the chemical processing industry, where materials are regularly exposed to aggressive substances.
  • FEPM is highly resistant to ozone, ultraviolet (UV) light, and weathering, which contributes to its long service life in outdoor applications.
  • FEPM also possesses good electrical insulation properties, making it suitable for certain electrical applications.
  • Applications: O-rings for Mechanical Seals,O-rings for Marine Engine,O-rings for Steam Resistance,O-rings for downhole Application,Cable Application,Transmission Seals for automotive,Turbo Hose

FEPM vs FKM

Feature FEPM (Tetrafluoroethylene Propylene Monomer) FKM (Fluorocarbon Rubber)
Chemical Resistance Exceptional resistance to a wide range of chemicals, including strong acids, bases, and solvents. Excellent resistance to oils, fuels, and some acids but generally less resistant to strong bases and certain chemicals compared to FEPM.
Resistance to Strong Bases Superior resistance, ideal for high pH environments. Less effective, limiting its use with alkaline substances.
Cost-Effectiveness More cost-effective in the long run due to durability and broader chemical compatibility. Lower initial cost, but overall value must consider potential for replacement and performance limitations.
Temperature Resistance Effective up to approximately 230°C (446°F), varying by formulation. Handles temperatures up to 250°C (482°F), depending on the specific type of FKM.
Application Suitability Suitable for harsher environments like chemical processing, with exposure to a wide range of chemicals. Favored in automotive, aerospace, and oil & gas for its resistance to fuels, oils, and some acids.
Weathering and Aging Resistance Excellent resistance to ozone, UV light, and weathering. Good resistance to weathering and aging, maintaining performance over time.
 

Chemical Resistance Chart

How to use this chart

» Meaning of symbol: 
OK: Recommended. △: Must confirm if usable by testing in advanced. X: Not recommended.
» This chart only provides the result of a single chemical to material, if a client uses more than one kind of chemical at the same time, please choose material by experience.
» This chart is for reference only which is not applicable to all working environments. Please refer to design equipment according to practical experience.
 
Category Name FEPM
Organic acids Acetic acid N/A
Acetic acid, glacial X
Acetic anhydride
Citric acid OK
Organic compound Acetaldehyde X
Acetone X
Methyl alcohol N/A
Aniline
Benzaldehyde
Benzene X
Benzyl alcohol
Benzyl chloride
Corn oil N/A
Ethanol OK
Ethylene glycol OK
Fatty acid N/A
Formaldehyde X
Formic acid X
Hexane X
Lactic acid N/A
Methanol OK
Paraffin oil N/A
Petroleum N/A
Phenol OK
Propane, liq OK
Propanol N/A
Stearic acid OK
Tannic acid OK
Tartaric acid OK
Toluene X
Urea N/A
Inorganic compound Ammonia OK
Ammonium chloride OK
Ammonium hydroxide OK
Ammonium nitrate N/A
Ammonium sulfate N/A
Aqua regia X
Barium chloride N/A
Barium hydroxide N/A
Brine N/A
Calcium Chloride N/A
Calcium hydroxide N/A
Carbonic acid OK
Chloric acid N/A
Chlorine OK (Water)
X (Dry)
Detergent N/A
Hydrobromic acid OK
Hydrochloric acid OK (37%)
Hydrofluoric acid N/A
Hydrogen peroxide OK
Nitric acid
Phosphoric acid OK
Potassium hydroxide OK
Potassium nitrate N/A
Potassium sulfate N/A
Sodium carbonate N/A
Sodium hydroxide OK
Sodium nitrate N/A
Sulfuric acid OK (Fuming)
Sulfur dioxide △ (Gas)

Reference

  1. ^ FEPM - wikipedia
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Bobby Brown    2023-8-8
Bobby Brown    2023-8-8
Bobby Brown    2023-8-8

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