FFKM O-rings EN7FD

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ProductDimensionsMaterialHardness (Shore A)CertificationStock
O-Ring 15.56x3.06 Kalrez-FFKM - 75 Shore A - Black - SES-606562 O-ring Black15.56 mm  x 3.06 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 85x16 Kalrez-FFKM - 75 Shore A - Black - SES-610828 O-ring Black85 mm  x 16 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 315x5.33 Kalrez-FFKM - 75 Shore A - Black - SES-614924 O-ring Black315 mm  x 5.33 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
Placeholder O-ring Black141 mm  x 14 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 23.8x2.39 Kalrez-FFKM - 75 Shore A - Black - SES-758224 O-ring Black23.9 mm  x 2.39 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 3.5x1 Kalrez-FFKM - 75 Shore A - Black - SES-604968 O-ring Black3.5 mm  x 1 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 48x1.78 Kalrez-FFKM - 75 Shore A - Black - SES-609226 O-ring Black48 mm  x 1.78 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 200x1.78 Kalrez-FFKM - 75 Shore A - Black - SES-613438 O-ring Black200 mm  x 1.78 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 51.35x1.78 Kalrez-FFKM - 75 Shore A - Black - SES-752502 O-ring Black51.36 mm  x 1.78 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 0.51x1.14 Kalrez-FFKM - 75 Shore A - Black - SES-756728 O-ring Black0.51 mm  x 1.14 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 6x5 Kalrez-FFKM - 75 Shore A - Black - SES-605309 O-ring Black6 mm  x 5 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 54.5x3.5 Kalrez-FFKM - 75 Shore A - Black - SES-609586 O-ring Black54.6 mm  x 3.5 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 222.5x6 Kalrez-FFKM - 75 Shore A - Black - SES-613784 O-ring Black222.6 mm  x 6 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
Placeholder O-ring Black67.6 mm  x 2.05 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 25.5x1 Kalrez-FFKM - 75 Shore A - Black - SES-607619 O-ring Black25.6 mm  x 1 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 190x2.6 Kalrez-FFKM - 75 Shore A - Black - SES-613289 O-ring Black190 mm  x 2.6 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 45.72x1.78 Kalrez-FFKM - 75 Shore A - Black - SES-752357 O-ring Black45.73 mm  x 1.78 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 480x3.5 Kalrez-FFKM - 75 Shore A - Black - SES-756581 O-ring Black481 mm  x 3.5 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 422.2x6.2 Kalrez-FFKM - 75 Shore A - Black - SES-756191 O-ring Black422.3 mm  x 6.2 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 12.9x1.24 Kalrez-FFKM - 75 Shore A - Black - SES-606226 O-ring Black12.10 mm  x 1.24 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 76x1.2 Kalrez-FFKM - 75 Shore A - Black - SES-610500 O-ring Black76 mm  x 1.2 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 19.66x1.6 Kalrez-FFKM - 75 Shore A - Black - SES-607011 O-ring Black19.67 mm  x 1.6 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
Placeholder O-ring Black101 mm  x 4.3 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 372x5 Kalrez-FFKM - 75 Shore A - Black - SES-615482 O-ring Black373 mm  x 5 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 195x5.9 Kalrez-FFKM - 75 Shore A - Black - SES-754582 O-ring Black195 mm  x 5.9 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 417x5 Kalrez-FFKM - 75 Shore A - Black - SES-756150 O-ring Black417 mm  x 5 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 430.21x4.76 Kalrez-FFKM - 75 Shore A - Black - SES-756238 O-ring Black430.22 mm  x 4.76 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 13.1x2.6 Kalrez-FFKM - 75 Shore A - Black - SES-606262 O-ring Black13.2 mm  x 2.6 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 77.3x5.7 Kalrez-FFKM - 75 Shore A - Black - SES-610538 O-ring Black77.4 mm  x 5.7 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 25.78x2.62 Kalrez-FFKM - 75 Shore A - Black - SES-607648 O-ring Black25.79 mm  x 2.62 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 120.65x5.33 Kalrez-FFKM - 75 Shore A - Black - SES-611872 O-ring Black120.66 mm  x 5.33 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 455x3 Kalrez-FFKM - 75 Shore A - Black - SES-616125 O-ring Black456 mm  x 3 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 275x14 Kalrez-FFKM - 75 Shore A - Black - SES-755164 O-ring Black276 mm  x 14 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 132x2.5 Kalrez-FFKM - 75 Shore A - Black - SES-612153 O-ring Black132 mm  x 2.5 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 500x5 Kalrez-FFKM - 75 Shore A - Black - SES-616404 O-ring Black501 mm  x 5 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 314x16 Kalrez-FFKM - 75 Shore A - Black - SES-755442 O-ring Black314 mm  x 16 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 36.27x5.72 Kalrez-FFKM - 75 Shore A - Black - SES-608498 O-ring Black36.28 mm  x 5.72 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
Placeholder O-ring Black19.72 mm  x 1.88 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 7.66x2.4 Kalrez-FFKM - 75 Shore A - Black - SES-605525 O-ring Black7.66 mm  x 2.4 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 59.39x3.53 Kalrez-FFKM - 75 Shore A - Black - SES-609814 O-ring Black59.40 mm  x 3.53 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.