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Material focus


FFKM: An outstanding chemical and thermal resistance


One of the main criteria to choose a seal is the chemical resistance with fluids in contact (gas or liquid). Focus on material with unequalled characteristics: the FFKM.


Today, some fluids (gas or liquid) are very aggressive. They can cause surface cracking, elasticity loss, compression set and fragility to your seal, in conclusion: the sealing loss.

Créat has the solution: the FFKM

FFKM Characteristics


The FFKM (perfluoroelastomer) is used where FKM is reaching its limits. Through fluorine in its composition, FFKM has an improved resistance to high temperatures (up to 300°C / 570°F) and an almost universal chemical compatibility (except for fluorinated products like freons).

Créat proposes it only when the application requires it because it is by far the most expansive elastomer.

Therefore, the FFKM has a volume swelling lower than 10% for the following fluids:

  • Inorganic acids
  • Organic acids
  • Alkalines
  • Amines (at 20°C / 69°F)
  • Steam
  • Ketones
  • Esters
  • Ethers
  • Aldehydes
  • Alcohols
  • Hydrocarbons
  • Acid gases
  • Lubricants

In this way, thanks to FFKM:

  • Seal’s lifespan is longer than other elastomers
  • Sealing performances are clearly improved
  • Processes contamination is reduced
  • High temperatures stability is improved
  • Parts have a better quality

FFKM main applications 


FFKM is mainly used in hostile environments (aggressive chemical environments and high temperatures).

  • Chemistry / Petro-chemistry
  • High temperatures water steam
  • Dye / Paint
  • Aeronautics / Aerospace

Créat’s products which can be made in FFKM 


Créat makes O-rings, drawing-parts, flat seals, … in FFKM 80 sh (black) for hostile environments applications (chemical or thermal).

Give us your FFKM projects

For further information about FFKM or if you have a specific need, thanks to contact our technical department.

The 24/05/2016 to 11:43:00