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FFKM - Perfluoroelastomer

Clwyd referenceFFKM
ASTM classificationFFKM
Typical applications
  • Semiconductor
  • Chemical
  • Petroleum
  • ‘O’ Ring applications
Advantages
  • Exceptional chemical resistance in harsh conditions
  • Thermal stability from -25°C to 320°C
  • Ultimate in sealing performance
Disadvantages
  • Poor compression set
  • Can be difficult to process
Available hardness range (Shore A)70- 95
Upper continuous service temp.320°C
Min. temp. for sealing applications-20°C
Minimum non-brittle  temp. -30°C
Tensile strength (up to)15 MPa
Elongation at break (up to)250%
Price BracketVery High
ASTM 1 OilExcellent
ASTM 2 OilExcellent
ASTM 3 OilExcellent
KeroseneExcellent
Liquid BExcellent
Liquid 101Excellent
Phosphate esterExcellent
KetoneExcellent
TolueneExcellent
Iso-octaneExcellent
MethanolExcellent
Acid (weak)Excellent
Acid (strong)Excellent
Base (weak)Excellent
Base (strong)Excellent
Hydrogen sulphideExcellent
SteamExcellent
OzoneExcellent
RadiationExcellent

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