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Operating Temperature-10°C to +310°C
FFKM (Perfluoroelastomer) combines the elasticity and sealing performance of rubber with the near-universal chemical inertness of PTFE. It is the highest-performing elastomer available and is specified only where other materials cannot survive.
Key Properties
- Resistant to virtually all known chemicals including aggressive solvents
- Operating temperatures up to 310°C continuous
- Near-zero gas permeability
- Excellent plasma and chemical vapour resistance
- Suitable for steam sterilisation (autoclaving)
Limitations
- Highest cost of all elastomers — specified only where other materials fail
- Limited low-temperature performance below -10°C
Typical Hardness
70–75 Shore A typical
Typical Applications
- Semiconductor wafer fabrication
- Pharmaceutical and biotech processes
- Aerospace and defence
- Chemical reactor vessels
- High-pressure supercritical CO₂ systems
- Mass spectrometry equipment