FFKM O-rings EN7FD

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ProductDimensionsMaterialHardness (Shore A)CertificationStock
O-Ring 97x2.62 Kalrez-FFKM - 75 Shore A - Black - SES-611178 O-ring Black97 mm  x 2.62 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 360x7 Kalrez-FFKM - 75 Shore A - Black - SES-615376 O-ring Black361 mm  x 7 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 184x15 Kalrez-FFKM - 75 Shore A - Black - SES-754493 O-ring Black184 mm  x 15 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 19.7x1.7 Kalrez-FFKM - 75 Shore A - Black - SES-758040 O-ring Black19.8 mm  x 1.7 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 142x5.33 Kalrez-FFKM - 75 Shore A - Black - SES-612399 O-ring Black142 mm  x 5.33 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 545x7 Kalrez-FFKM - 75 Shore A - Black - SES-616663 O-ring Black546 mm  x 7 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 353x2.62 Kalrez-FFKM - 75 Shore A - Black - SES-755713 O-ring Black353 mm  x 2.62 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 39.75x3.53 Kalrez-FFKM - 75 Shore A - Black - SES-608736 O-ring Black39.76 mm  x 3.53 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 27.8x3.5 Kalrez-FFKM - 75 Shore A - Black - SES-607822 O-ring Black27.9 mm  x 3.5 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 17.2x2.4 Kalrez-FFKM - 75 Shore A - Black - SES-606742 O-ring Black17.3 mm  x 2.4 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 89.6x3.5 Kalrez-FFKM - 75 Shore A - Black - SES-610968 O-ring Black89.7 mm  x 3.5 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 346x7 Kalrez-FFKM - 75 Shore A - Black - SES-615241 O-ring Black347 mm  x 7 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
Placeholder O-ring Black164.60 mm  x 1.78 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 33.21x3.53 Kalrez-FFKM - 75 Shore A - Black - SES-758586 O-ring Black33.22 mm  x 3.53 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 490x16 Kalrez-FFKM - 75 Shore A - Black - SES-756655 O-ring Black491 mm  x 16 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 16x2.4 Kalrez-FFKM - 75 Shore A - Black - SES-606614 O-ring Black16 mm  x 2.4 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 88.01x2.49 Kalrez-FFKM - 75 Shore A - Black - SES-610910 O-ring Black88.02 mm  x 2.49 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 18.5x2.62 Kalrez-FFKM - 75 Shore A - Black - SES-606892 O-ring Black18.5 mm  x 2.62 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 95x1.78 Kalrez-FFKM - 75 Shore A - Black - SES-611122 O-ring Black95 mm  x 1.78 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 361.6x3.8 Kalrez-FFKM - 75 Shore A - Black - SES-615392 O-ring Black361.7 mm  x 3.8 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 179x10 Kalrez-FFKM - 75 Shore A - Black - SES-754446 O-ring Black179 mm  x 10 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 59.36x3.5 Kalrez-FFKM - 75 Shore A - Black O-ring Black59.37 mm  x 3.5 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
Placeholder O-ring Black8.6 mm  x 1.27 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 62x3.53 Kalrez-FFKM - 75 Shore A - Black - SES-609940 O-ring Black62 mm  x 3.53 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 250x5.3 Kalrez-FFKM - 75 Shore A - Black - SES-614156 O-ring Black250 mm  x 5.3 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 89x7.8 Kalrez-FFKM - 75 Shore A - Black - SES-753271 O-ring Black89 mm  x 7.8 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 10.15x2.34 Kalrez-FFKM - 75 Shore A - Black - SES-757497 O-ring Black10.16 mm  x 2.34 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
Placeholder O-ring Black24 mm  x 3 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 114.3x3.53 Kalrez-FFKM - 75 Shore A - Black - SES-611693 O-ring Black114.4 mm  x 3.53 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 430x7 Kalrez-FFKM - 75 Shore A - Black - SES-615960 O-ring Black430 mm  x 7 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
Placeholder O-ring Black254 mm  x 9.53 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 37x3 Kalrez-FFKM - 75 Shore A - Black - SES-608539 O-ring Black37 mm  x 3 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 24.8x7 Kalrez-FFKM - 75 Shore A - Black - SES-607543 O-ring Black24.9 mm  x 7 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 120x10 Kalrez-FFKM - 75 Shore A - Black - SES-611849 O-ring Black120 mm  x 10 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 443.6x7 Kalrez-FFKM - 75 Shore A - Black - SES-616054 O-ring Black443.7 mm  x 7 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 277.8x2.62 Kalrez-FFKM - 75 Shore A - Black - SES-755180 O-ring Black277.9 mm  x 2.62 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 24.08x2.62 Kalrez-FFKM - 75 Shore A - Black - SES-607470 O-ring Black24.09 mm  x 2.62 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 114.7x6.99 Kalrez-FFKM - 75 Shore A - Black - SES-611708 O-ring Black114.8 mm  x 6.99 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 432x4 Kalrez-FFKM - 75 Shore A - Black - SES-615977 O-ring Black432 mm  x 4 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 256x2.5 Kalrez-FFKM - 75 Shore A - Black - SES-755034 O-ring Black256 mm  x 2.5 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.