FFKM O-rings EN7FD

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ProductDimensionsMaterialHardness (Shore A)CertificationStock
O-Ring 208x3 Kalrez-FFKM - 75 Shore A - Black - SES-613555 O-ring Black208 mm  x 3 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 53.97x4.76 Kalrez-FFKM - 75 Shore A - Black - SES-752547 O-ring Black53.98 mm  x 4.76 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 402x16 Kalrez-FFKM - 75 Shore A - Black - SES-756037 O-ring Black403 mm  x 16 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 6.42x3.53 Kalrez-FFKM - 75 Shore A - Black - SES-605356 O-ring Black6.43 mm  x 3.53 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 54x3.5 Kalrez-FFKM - 75 Shore A - Black - SES-609559 O-ring Black54 mm  x 3.5 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 215.58x2.62 Kalrez-FFKM - 75 Shore A - Black - SES-613683 O-ring Black215.59 mm  x 2.62 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 59.5x4.25 Kalrez-FFKM - 75 Shore A - Black - SES-752688 O-ring Black59.6 mm  x 4.25 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 2x3 Kalrez-FFKM - 75 Shore A - Black - SES-756833 O-ring Black2 mm  x 3 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 22.5x3.5 Kalrez-FFKM - 75 Shore A - Black - SES-607323 O-ring Black22.5 mm  x 3.5 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 109.16x4.75 Kalrez-FFKM - 75 Shore A - Black - SES-611532 O-ring Black109.17 mm  x 4.75 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 390x7 Kalrez-FFKM - 75 Shore A - Black - SES-615643 O-ring Black391 mm  x 7 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 206x10 Kalrez-FFKM - 75 Shore A - Black - SES-754673 O-ring Black206 mm  x 10 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 175x7 Kalrez-FFKM - 75 Shore A - Black - SES-613054 O-ring Black175 mm  x 7 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 925x3.53 Kalrez-FFKM - 75 Shore A - Black - SES-617234 O-ring Black926 mm  x 3.53 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 423.93x3.53 Kalrez-FFKM - 75 Shore A - Black - SES-756195 O-ring Black423.94 mm  x 3.53 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 108x3.5 Kalrez-FFKM - 75 Shore A - Black - SES-611500 O-ring Black108 mm  x 3.5 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 394x6 Kalrez-FFKM - 75 Shore A - Black - SES-615682 O-ring Black394 mm  x 6 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 203x1.78 Kalrez-FFKM - 75 Shore A - Black - SES-754646 O-ring Black204 mm  x 1.78 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 424x9 Kalrez-FFKM - 75 Shore A - Black - SES-756197 O-ring Black424 mm  x 9 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 29.3x1 Kalrez-FFKM - 75 Shore A - Black - SES-607945 O-ring Black29.4 mm  x 1 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 129.5x3 Kalrez-FFKM - 75 Shore A - Black - SES-612090 O-ring Black129.6 mm  x 3 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 479.2x5.7 Kalrez-FFKM - 75 Shore A - Black - SES-616272 O-ring Black479.3 mm  x 5.7 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 285x9.5 Kalrez-FFKM - 75 Shore A - Black - SES-755236 O-ring Black285 mm  x 9.5 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 34x1 Kalrez-FFKM - 75 Shore A - Black - SES-608301 O-ring Black34 mm  x 1 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 144x6 Kalrez-FFKM - 75 Shore A - Black - SES-612445 O-ring Black144 mm  x 6 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 536x7 Kalrez-FFKM - 75 Shore A - Black - SES-616627 O-ring Black537 mm  x 7 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
Placeholder O-ring Black335 mm  x 8.6 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 7.1x1.5 Kalrez-FFKM - 75 Shore A - Black - SES-605441 O-ring Black7.1 mm  x 1.5 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 55.88x2.03 Kalrez-FFKM - 75 Shore A - Black - SES-609646 O-ring Black55.89 mm  x 2.03 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 222x2.62 Kalrez-FFKM - 75 Shore A - Black - SES-613775 O-ring Black223 mm  x 2.62 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 63.5x2.7 Kalrez-FFKM - 75 Shore A - Black - SES-752791 O-ring Black63.6 mm  x 2.7 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
Placeholder O-ring Black3.2 mm  x 1.5 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 3x2.1 Kalrez-FFKM - 75 Shore A - Black - SES-604930 O-ring Black3 mm  x 2.1 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 46.2x5.3 Kalrez-FFKM - 75 Shore A - Black - SES-609124 O-ring Black46.3 mm  x 5.3 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 189.3x5.5 Kalrez-FFKM - 75 Shore A - Black - SES-613270 O-ring Black189.4 mm  x 5.5 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 42x10 Kalrez-FFKM - 75 Shore A - Black - SES-752269 O-ring Black42 mm  x 10 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 459x3.5 Kalrez-FFKM - 75 Shore A - Black - SES-756423 O-ring Black459 mm  x 3.5 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 13.79x2.01 Kalrez-FFKM - 75 Shore A - Black - SES-606341 O-ring Black13.80 mm  x 2.01 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 77.5x6.5 Kalrez-FFKM - 75 Shore A - Black - SES-610549 O-ring Black77.6 mm  x 6.5 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 292x2 Kalrez-FFKM - 75 Shore A - Black - SES-614675 O-ring Black292 mm  x 2 mm FFKM - FFPM75 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 N7FD 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 N7FD certified made from FFKM, please send us a Direct Enquiry. Together we can discuss the specifications and find the right product for you.