FFKM, or perfluoroelastomer, is a type of specialty elastomer material that offers high performance in harsh chemical and high-temperature environments. These materials are based on a combination of carbon, fluorine, and oxygen, which give them unique properties such as chemical resistance, thermal stability, and resistance to radiation.

FFKM materials are highly crosslinked, meaning that they have a high degree of chemical bonding between polymer chains. This crosslinking gives them excellent chemical resistance to a wide range of harsh chemicals, including acids, bases, solvents, and oxidizing agents. In fact, FFKM materials can withstand exposure to chemicals that would quickly degrade other elastomer materials, making them ideal for use in applications where chemical resistance is critical.

FFKM materials also have excellent thermal stability, allowing them to maintain their mechanical properties at high temperatures. They can typically withstand temperatures up to 300°C (572°F) without losing their shape or breaking down. This thermal stability makes FFKM materials suitable for use in high-temperature applications such as jet engines, chemical processing equipment, and semiconductor manufacturing.

Another important property of FFKM materials is their low permeability to gases and liquids. This makes them ideal for use in applications where there is a need to prevent the escape of hazardous or toxic materials, or where there is a need to maintain a specific pressure or vacuum. For example, FFKM seals are used in oil and gas drilling equipment to prevent the escape of drilling fluids, and in semiconductor manufacturing to maintain a controlled atmosphere within processing equipment.

FFKM materials are available in a range of grades, each with different properties tailored to specific applications. For example, some FFKM materials are optimized for low-temperature applications, while others are optimized for high-temperature applications. Some grades may also have improved resistance to specific chemicals or better mechanical properties, depending on the intended use.

One of the most popular FFKM materials is Chemraz, which is a brand name for a specific type of perfluoroelastomer material. Chemraz is known for its excellent chemical resistance to a wide range of chemicals, including acids, bases, solvents, and steam. It is also highly resistant to high-temperature environments, making it suitable for use in applications such as chemical processing, oil and gas drilling, and semiconductor manufacturing.

Another popular FFKM material is Kalrez, which is a brand name for a specific type of perfluoroelastomer material made by DuPont. Kalrez is known for its excellent chemical resistance to a wide range of chemicals, including acids, bases, solvents, and fuels. It is also highly resistant to high-temperature environments, making it suitable for use in applications such as aerospace, semiconductor manufacturing, and chemical processing.