What are the properties of Fluoroelastomers (FKM)
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- Apr 16,2020
What are the Properties of Fluoroelastomer (FKM)?
1. Chemical Resistance
FKM is renowned for its excellent resistance to a wide range of chemicals, including:
Oils and Fuels: It can withstand both aliphatic and aromatic hydrocarbons, making it ideal for automotive and aerospace applications.
Solvents: FKM resists many organic solvents, such as ketones, esters, and ethers.
Acids and Bases: It is resistant to strong acids and bases, ensuring durability in chemical processing environments.
Oxidizers: FKM can handle exposure to strong oxidizing agents, making it suitable for high-performance industrial applications.
2. Thermal Stability
FKM performs well over a broad temperature range, typically from -20°C to 200°C (-4°F to 392°F), with some specialized grades capable of withstanding even higher temperatures. This thermal stability is essential for:
Automotive and Aerospace: Engine seals and gaskets that must endure extreme temperatures.
Industrial Applications: Equipment that operates continuously at elevated temperatures.
3. Mechanical Properties
FKM combines strength and flexibility, providing several mechanical advantages:
High Tensile Strength: FKM can endure significant pulling forces without breaking, making it ideal for demanding sealing applications.
Flexibility: It remains flexible even at low temperatures, which is crucial for dynamic seals and gaskets.
Compression Set Resistance: FKM retains its shape and elasticity after being compressed, ensuring a reliable seal over time.
4. Aging and Environmental Resistance
FKM exhibits excellent resistance to aging and environmental factors:
Ozone and UV Resistance: FKM does not crack or degrade when exposed to ozone and ultraviolet light, making it suitable for outdoor applications.
Weathering Resistance: It can withstand harsh weather conditions without losing its properties, ensuring long-term durability.
5. Low Permeability
FKM has low gas permeability, which is critical for applications that require gas containment, such as:
Automotive Fuel Systems: Preventing fuel vapor leaks.
Aerospace and Chemical Processing: Containing hazardous gases in pressurized systems.
6. Flame Resistance
FKM is inherently flame-resistant and self-extinguishing, making it a safe choice for applications where fire risk is a concern:
Aerospace and Automotive: Enhancing fire safety in vehicles and aircraft.
Building and Construction: Used in fire-resistant materials that must meet stringent safety standards.
7. Electrical Properties
FKM also has good dielectric properties, making it suitable for certain electrical applications:
Cable Insulation: Used in cables that require resistance to high temperatures and electrical currents.
Electronic Components: Insulating material in sensors and other components exposed to heat and chemicals.
8. Biocompatibility
Certain grades of FKM are biocompatible, meaning they do not react adversely with biological tissues, making them suitable for:
Medical Devices: Seals and gaskets in equipment that require sterilization and exposure to bodily fluids.
Pharmaceutical Equipment: Used in processing equipment for drugs and sensitive substances.