What are the advantages of FFKM materials？
Aug 03,2023
FFKM (perfluorinated elastomer) is a special type of fluorinated elastomer that performs well in many extreme applications due to its excellent chemical stability, high temperature resistance, aging resistance, and low permeability. FFKM offers significant advantages over other traditional materials (such as NBR, EPDM, FKM, etc.), providing long-term reliability and high performance, especially in harsh sealing applications. The following are the main advantages of FFKM materials compared to other commonly used sealing materials:
1. Excellent chemical resistance
One of the greatest advantages of FFKM materials is their extremely high chemical stability. Because its chemical structure is almost entirely composed of fluorine atoms, FFKM is resistant to almost all known chemicals, including strong acids, strong bases, solvents, oxidants, chlorides, fluorides, and more. In contrast, traditional sealing materials such as NBR (nitrile butadiene rubber) and EPDM (ethylene-propylene rubber) degrade rapidly when exposed to strong acids, bases or solvents, resulting in seal failure. Even FKM (fluorine rubber), although it has good chemical resistance, is still insufficient for some strong acids and some solvents. Due to its excellent corrosion resistance, FFKM can provide a durable and reliable sealing effect in extreme chemical environments, and is widely used in petrochemical, semiconductor manufacturing and pharmaceutical industries.
2. High temperature resistance
The high temperature resistance of FFKM materials is much better than that of most conventional materials. It can operate stably in a temperature range of up to +325°C, with certain formulations able to withstand even higher temperatures. This makes FFKM the material of choice for high temperature sealing applications. For example, in engines, reactors, boilers, aerospace equipment, FFKM can effectively resist high temperature environments, while other materials such as NBR and EPDM are prone to deformation, hardening, or loss of elasticity at high temperatures. Even FKM materials, despite having good high temperature resistance, usually have a temperature tolerance range lower than FFKM.
3. Excellent aging resistance
FFKM material has very strong anti-aging ability. It maintains elasticity and tightness in extreme environments for long periods of time without cracking, hardening or aging. This makes FFKM seals particularly suitable for long running equipment and in high temperature, chemically corrosive environments. In contrast, materials such as NBR and EPDM are easy to age under high temperature or ultraviolet irradiation and lose their original properties, resulting in seal failure. Although the aging resistance of FKM materials is also better, the long-term stability of FKM materials is less than that of FFKM, especially in extreme environments.
4. Low friction coefficient and low permeability
FFKM has a very low coefficient of friction, which makes it excellent for dynamic sealing applications. FFKM maintains low wear in high friction, high pressure environments and reduces energy loss. In addition, FFKM has extremely low gas and liquid permeability, which makes it ideal for sealing systems in high-precision equipment. For example, vacuum equipment and gas delivery systems in the semiconductor manufacturing process, the use of FFKM seals can effectively avoid gas or liquid leakage and ensure the stability of the system.
5. Environmental protection
FFKM material does not contain any harmful substances, so it is widely used in industries that meet environmental standards. With increasingly stringent environmental regulations, FFKM as an environmentally friendly, high-performance sealing material can meet the environmental friendly requirements of more and more industrial applications.
FFKM materials show incomparable advantages over other materials, especially under extreme operating conditions. Its excellent chemical resistance, high temperature resistance, aging resistance, and low friction and permeability make FFKM an indispensable sealing material in many high-end, demanding applications. In petrochemical, semiconductor, aerospace and other areas that require high performance sealing solutions, FFKM materials far outperform other traditional sealing materials, making them ideal for demanding sealing applications.
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