FKM (Fluoroelastomer) is a high-performance synthetic rubber known for its exceptional resistance to high temperatures, chemical corrosion, and oils, commonly used in sealing applications under extreme conditions.
Key Properties:
High-temperature resistance: Operating range typically -20°C to 250°C (short-term up to 300°C)
Chemical resistance: Resistant to fuels, lubricants, strong acids, alkalis, and most organic solvents
Oil resistance: Excellent performance in petroleum-based media
Low gas permeability: Ideal for high-pressure sealing
Stable mechanical properties: High compression set resistance
Common Applications:
Automotive industry (engine seals, fuel systems)
Aerospace (hydraulic systems, O-rings)
Chemical equipment (valves, pump seals)
Semiconductor manufacturing (corrosion-resistant components)
Limitations:
Poor low-temperature flexibility: Elasticity drops significantly below -20°C
High cost: Priced significantly higher than standard rubbers (e.g., NBR, EPDM)
Susceptibility to ketones and esters: May swell or degrade