FFKM O-rings EN9EX

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ProductDimensionsMaterialHardness (Shore A)CertificationStock
O-Ring 385x6 Kalrez-FFKM - 90 Shore A - Black - SES-653151 O-ring Black385 mm  x 6 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 437x4 Kalrez-FFKM - 90 Shore A - Black - SES-653562 O-ring Black438 mm  x 4 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 507.5x5.3 Kalrez-FFKM - 90 Shore A - Black - SES-654031 O-ring Black507.6 mm  x 5.3 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 597x5.33 Kalrez-FFKM - 90 Shore A - Black - SES-654431 O-ring Black597 mm  x 5.33 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 845x8.4 Kalrez-FFKM - 90 Shore A - Black - SES-654742 O-ring Black846 mm  x 8.4 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 7.2x1.5 Kalrez-FFKM - 90 Shore A - Black - SES-765889 O-ring Black7.2 mm  x 1.5 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
Placeholder O-ring Black6.98 mm  x 3.53 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 12x4.6 Kalrez-FFKM - 90 Shore A - Black - SES-766230 O-ring Black12 mm  x 4.6 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 12x7 Kalrez-FFKM - 90 Shore A - Black - SES-643702 O-ring Black12 mm  x 7 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 19.05x3.18 Kalrez-FFKM - 90 Shore A - Black - SES-766619 O-ring Black19.05 mm  x 3.18 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 20.2x5.33 Kalrez-FFKM - 90 Shore A - Black - SES-644645 O-ring Black20.3 mm  x 5.33 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 26x1.31 Kalrez-FFKM - 90 Shore A - Black - SES-766929 O-ring Black26 mm  x 1.31 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 29.4x1.3 Kalrez-FFKM - 90 Shore A - Black - SES-645510 O-ring Black29.5 mm  x 1.3 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
Placeholder O-ring Black37.4 mm  x 7.3 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 36x3.8 Kalrez-FFKM - 90 Shore A - Black - SES-646024 O-ring Black36 mm  x 3.8 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 57.15x0.91 Kalrez-FFKM - 90 Shore A - Black - SES-767851 O-ring Black57.16 mm  x 0.91 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 45.9x10 Kalrez-FFKM - 90 Shore A - Black - SES-646651 O-ring Black45.10 mm  x 10 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 107x1.2 Kalrez-FFKM - 90 Shore A - Black - SES-768788 O-ring Black107 mm  x 1.2 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 57x1 Kalrez-FFKM - 90 Shore A - Black - SES-647262 O-ring Black57 mm  x 1 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
Placeholder O-ring Black207.6 mm  x 7.5 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 79.3x2.5 Kalrez-FFKM - 90 Shore A - Black - SES-648159 O-ring Black79.4 mm  x 2.5 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
Placeholder O-ring Black380 mm  x 8.6 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 99.6x5.7 Kalrez-FFKM - 90 Shore A - Black - SES-648812 O-ring Black99.7 mm  x 5.7 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 133.6x5.7 Kalrez-FFKM - 90 Shore A - Black - SES-649761 O-ring Black133.7 mm  x 5.7 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
Placeholder O-ring Black156 mm  x 7 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 187x3.53 Kalrez-FFKM - 90 Shore A - Black - SES-650793 O-ring Black187 mm  x 3.53 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 221x3.5 Kalrez-FFKM - 90 Shore A - Black - SES-651315 O-ring Black221 mm  x 3.5 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 250x6 Kalrez-FFKM - 90 Shore A - Black - SES-651717 O-ring Black250 mm  x 6 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 293x4 Kalrez-FFKM - 90 Shore A - Black - SES-652244 O-ring Black293 mm  x 4 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 342x3.53 Kalrez-FFKM - 90 Shore A - Black - SES-652747 O-ring Black342 mm  x 3.53 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 384x3 Kalrez-FFKM - 90 Shore A - Black - SES-653138 O-ring Black385 mm  x 3 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 13.8x1.78 Kalrez-FFKM - 90 Shore A - Black - SES-643900 O-ring Black13.9 mm  x 1.78 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
Placeholder O-ring Black23.7 mm  x 2 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 31.75x3.17 Kalrez-FFKM - 90 Shore A - Black - SES-645695 O-ring Black31.76 mm  x 3.17 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 41.5x6 Kalrez-FFKM - 90 Shore A - Black - SES-646405 O-ring Black41.6 mm  x 6 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 53x7 Kalrez-FFKM - 90 Shore A - Black - SES-647061 O-ring Black53 mm  x 7 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 70x2 Kalrez-FFKM - 90 Shore A - Black - SES-647837 O-ring Black70 mm  x 2 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
Placeholder O-ring Black93 mm  x 2.5 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 127.5x3 Kalrez-FFKM - 90 Shore A - Black - SES-649595 O-ring Black127.6 mm  x 3 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 153.5x1.6 Kalrez-FFKM - 90 Shore A - Black - SES-650206 O-ring Black153.6 mm  x 1.6 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon

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 N9EX 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 N9EX certified made from FFKM, please send us a Direct Enquiry. Together we can discuss the specifications and find the right product for you.