FFKM O-rings EN9ED

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To provide even greater thermal stability and solvent resistance, tetrafluoroethylene (TFE) containing fluoroelastomer terpolymers were introduced in 1959. The latest FKM polymers have a much broader fluids resistance profile than standard fluoroelastomers, and are able to withstand strong bases and ketones as well as aromatic hydrocarbons, oils, acids, and steam. In 1975 a new fluoroelastomer family was introduced by Asahi Glass Co., FEPM, based on an alternating copolymer of TFE and propylene. It is marketed under the trade name AFLAS®.

The chemical resistance and high-temperature stability is due to the bulkiness of the fluorine atoms, shielding the polymer backbone and carbon-fluor bond from attack, and the high bonding energy of the carbon-fluor bond.

FFKM gives the indication for the types of improved properties for different applications.


Material: Fluorocarbon elastomers
Fluorocarbon rubber is an elastomer

Fluorocarbon elastomers are highly fluorinated carbon-based polymers that are used in applications that must withstand aggressive chemical and ozone attacks.

In general, with increasing fluorine content, the resistance to chemical attack is improved, while the low temperature properties decrease. However, there are special quality fluorocarbons that do have a high fluorine content at low temperature properties.

Good qualities:

  • Chemical compatibility
  • Good temperature resistance
  • Low compression setting
  • Resistant to minerals, oils and fats
  • Good gas tightness
  • Excellent resistance to non-polar media
  • Excellent weather and aging stability
  • Very good oxygen and ozone stability
  • Operating temperature range from -26 °C to +205/230 °C (-15 °F to +400/440 °F)
  • When used briefly, the material can tolerate even higher temperatures
  • Special compounds with improved chemical resistance are available
  • Brake fluids based on glycol
  • Low molecular weight organic acids

FFKM
FFKM are perfluoroelastomeric compounds that contain an even greater amount of fluorine than FKMO fluoroelastomers.

FFKM have an improved resistance to high temperatures and chemicals and are even resistant to environments where oxygen plasma is present for many hours. Certain grades have a maximum continuous service temperature of 327 °C / 621 °F. They are often used to make o-rings and gaskets that are used to make o-rings and gaskets that are used in applications where contact with hydrocarbons or highly corrosive liquids the case, or when a wide temperature range is encountered.

On this page we offer our range of N9ED certified O-Rings. Search for your specific O ring by using the filters on the left of the page or take your time and browse our wide range of our products. When you can not find the product you are looking for in our N9ED certified made from FFKM, please send us a Direct Enquiry. Together we can discuss the specifications and find the right product for you.

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ProductDimensionsMaterialHardness (Shore A)CertificationStock
O-Ring 92,5x5,33 Kalrez-FFKM - 90 Shore A - Black - SES-551347 O-ring schwarzNORSOK M710 – AEDFFKM90 Shore A0 icon
O-Ring 81,92x6,99 Kalrez-FFKM - 90 Shore A - Black - SES-541834 O-ring schwarzNORSOK M710 – AEDFFKM90 Shore A0 icon
O-Ring 168,5x3 Kalrez-FFKM - 90 Shore A - Black - SES-552305 O-ring schwarzNORSOK M710 – AEDFFKM90 Shore A0 icon
O-Ring 40,7x3,7 Kalrez-FFKM - 90 Shore A - Black - SES-587932 O-ring schwarzNORSOK M710 – AEDFFKM90 Shore A0 icon
O-Ring 77x1,5 Kalrez-FFKM - 90 Shore A - Black - SES-551059 O-ring schwarzNORSOK M710 – AEDFFKM90 Shore A0 icon
O-Ring 14,8x3 Kalrez-FFKM - 90 Shore A - Black - SES-586693 O-ring schwarzNORSOK M710 – AEDFFKM90 Shore A0 icon
O-Ring 328x6 Kalrez-FFKM - 90 Shore A - Black - SES-590725 O-ring schwarzNORSOK M710 – AEDFFKM90 Shore A0 icon
O-Ring 149,1x8,4 Kalrez-FFKM - 90 Shore A - Black - SES-552111 O-ring schwarzNORSOK M710 – AEDFFKM90 Shore A0 icon
O-Ring 33,6x1,78 Kalrez-FFKM - 90 Shore A - Black - SES-587675 O-ring schwarzNORSOK M710 – AEDFFKM90 Shore A0 icon
O-Ring 602x10 Kalrez-FFKM - 90 Shore A - Black - SES-591801 O-ring schwarzNORSOK M710 – AEDFFKM90 Shore A0 icon
O-Ring 122x1,3 Kalrez-FFKM - 90 Shore A - Black - SES-735962 O-ring schwarzNORSOK M710 – AEDFFKM90 Shore A0 icon
O-Ring 124x5 Kalrez-FFKM - 90 Shore A - Black - SES-551785 O-ring schwarzNORSOK M710 – AEDFFKM90 Shore A0 icon
O-Ring 27,71x1,75 Kalrez-FFKM - 90 Shore A - Black - SES-587415 O-ring schwarzNORSOK M710 – AEDFFKM90 Shore A0 icon
O-Ring 514,5x8,4 Kalrez-FFKM - 90 Shore A - Black - SES-591459 O-ring schwarzNORSOK M710 – AEDFFKM90 Shore A0 icon
O-Ring 105,89x2,57 Kalrez-FFKM - 90 Shore A - Black - SES-735704 O-ring schwarzNORSOK M710 – AEDFFKM90 Shore A0 icon
O-Ring 80x5 Kalrez-FFKM - 90 Shore A - Black - SES-551121 O-ring schwarzNORSOK M710 – AEDFFKM90 Shore A0 icon
O-Ring 15,9x2,7 Kalrez-FFKM - 90 Shore A - Black - SES-586757 O-ring schwarzNORSOK M710 – AEDFFKM90 Shore A0 icon
O-Ring 344,5x8,4 Kalrez-FFKM - 90 Shore A - Black - SES-590792 O-ring schwarzNORSOK M710 – AEDFFKM90 Shore A0 icon
O-Ring 68,84x3,68 Kalrez-FFKM - 90 Shore A - Black - SES-735047 O-ring schwarzNORSOK M710 – AEDFFKM90 Shore A0 icon
O-Ring 88x5 Kalrez-FFKM - 90 Shore A - Black - SES-551256 O-ring schwarzNORSOK M710 – AEDFFKM90 Shore A0 icon
O-Ring 18,5x3,1 Kalrez-FFKM - 90 Shore A - Black - SES-586890 O-ring schwarzNORSOK M710 – AEDFFKM90 Shore A0 icon
O-Ring 374x4 Kalrez-FFKM - 90 Shore A - Black - SES-590926 O-ring schwarzNORSOK M710 – AEDFFKM90 Shore A0 icon
O-Ring 76,2x6,6 Kalrez-FFKM - 90 Shore A - Black - SES-735182 O-ring schwarzNORSOK M710 – AEDFFKM90 Shore A0 icon
O-Ring 51,5x2,65 Kalrez-FFKM - 90 Shore A - Black - SES-550477 O-ring schwarzNORSOK M710 – AEDFFKM90 Shore A0 icon
O-Ring 7,2x3 Kalrez-FFKM - 90 Shore A - Black - SES-586127 O-ring schwarzNORSOK M710 – AEDFFKM90 Shore A0 icon
O-Ring 227x4 Kalrez-FFKM - 90 Shore A - Black - SES-590164 O-ring schwarzNORSOK M710 – AEDFFKM90 Shore A0 icon
O-Ring 42x5,4 Kalrez-FFKM - 90 Shore A - Black - SES-734422 O-ring schwarzNORSOK M710 – AEDFFKM90 Shore A0 icon
O-Ring 63x3,55 Kalrez-FFKM - 90 Shore A - Black - SES-550778 O-ring schwarzNORSOK M710 – AEDFFKM90 Shore A0 icon
O-Ring 11x1,25 Kalrez-FFKM - 90 Shore A - Black - SES-586428 O-ring schwarzNORSOK M710 – AEDFFKM90 Shore A0 icon
O-Ring 274,6x5,7 Kalrez-FFKM - 90 Shore A - Black - SES-590465 O-ring schwarzNORSOK M710 – AEDFFKM90 Shore A0 icon
O-Ring 440x5,6 Kalrez-FFKM - 90 Shore A - Black - SES-738458 O-ring schwarzNORSOK M710 – AEDFFKM90 Shore A0 icon
O-Ring 145x3,5 Kalrez-FFKM - 90 Shore A - Black - SES-552057 O-ring schwarzNORSOK M710 – AEDFFKM90 Shore A0 icon
O-Ring 34x2,6 Kalrez-FFKM - 90 Shore A - Black - SES-587693 O-ring schwarzNORSOK M710 – AEDFFKM90 Shore A0 icon
O-Ring 592x5 Kalrez-FFKM - 90 Shore A - Black - SES-591759 O-ring schwarzNORSOK M710 – AEDFFKM90 Shore A0 icon
O-Ring 124x17 Kalrez-FFKM - 90 Shore A - Black - SES-735991 O-ring schwarzNORSOK M710 – AEDFFKM90 Shore A0 icon
O-Ring 75x2,65 Kalrez-FFKM - 90 Shore A - Black - SES-551025 O-ring schwarzNORSOK M710 – AEDFFKM90 Shore A0 icon
O-Ring 14,43x1,78 Kalrez-FFKM - 90 Shore A - Black - SES-586668 O-ring schwarzNORSOK M710 – AEDFFKM90 Shore A0 icon
O-Ring 326x3,5 Kalrez-FFKM - 90 Shore A - Black - SES-590708 O-ring schwarzNORSOK M710 – AEDFFKM90 Shore A0 icon
O-Ring 64x9,27 Kalrez-FFKM - 90 Shore A - Black - SES-734968 O-ring schwarzNORSOK M710 – AEDFFKM90 Shore A0 icon
O-Ring 58x2,65 Kalrez-FFKM - 90 Shore A - Black - SES-550655 O-ring schwarzNORSOK M710 – AEDFFKM90 Shore A0 icon