FFKM O-rings EN7FD

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ProductDimensionsMaterialHardness (Shore A)CertificationStock
O-Ring 86.4x1.25 Kalrez-FFKM - 75 Shore A - Black - SES-753223 O-ring Black86.5 mm  x 1.25 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 9.07x1.85 Kalrez-FFKM - 75 Shore A - Black - SES-757416 O-ring Black9.07 mm  x 1.85 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 32x4.15 Kalrez-FFKM - 75 Shore A - Black - SES-758544 O-ring Black32 mm  x 4.15 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
Placeholder O-ring Black11.92 mm  x 2.62 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 11.8x2.65 Kalrez-FFKM - 75 Shore A - Black - SES-606091 O-ring Black11.9 mm  x 2.65 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 70x6 Kalrez-FFKM - 75 Shore A - Black - SES-610290 O-ring Black70 mm  x 6 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
Placeholder O-ring Black281 mm  x 6 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
Placeholder O-ring Black106.6 mm  x 1.28 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 15.8x0.81 Kalrez-FFKM - 75 Shore A - Black - SES-757818 O-ring Black15.8 mm  x 0.81 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 14x2.4 Kalrez-FFKM - 75 Shore A - Black - SES-606378 O-ring Black14 mm  x 2.4 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 80x6.5 Kalrez-FFKM - 75 Shore A - Black - SES-610640 O-ring Black80 mm  x 6.5 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 304.5x8.4 Kalrez-FFKM - 75 Shore A - Black - SES-614819 O-ring Black304.6 mm  x 8.4 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
Placeholder O-ring Black131 mm  x 1.58 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 9.5x4.2 Kalrez-FFKM - 75 Shore A - Black - SES-757445 O-ring Black9.5 mm  x 4.2 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 2.31x1 Kalrez-FFKM - 75 Shore A - Black - SES-604838 O-ring Black2.31 mm  x 1 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 44.5x2.4 Kalrez-FFKM - 75 Shore A - Black - SES-609025 O-ring Black44.6 mm  x 2.4 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 190x3.5 Kalrez-FFKM - 75 Shore A - Black - SES-613294 O-ring Black190 mm  x 3.5 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
Placeholder O-ring Black42.6 mm  x 1.5 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 477x8 Kalrez-FFKM - 75 Shore A - Black - SES-756567 O-ring Black477 mm  x 8 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 17.5x2.5 Kalrez-FFKM - 75 Shore A - Black - SES-606773 O-ring Black17.5 mm  x 2.5 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 92x6.43 Kalrez-FFKM - 75 Shore A - Black - SES-611043 O-ring Black92 mm  x 6.43 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 344.5x8.4 Kalrez-FFKM - 75 Shore A - Black - SES-615223 O-ring Black344.6 mm  x 8.4 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 167.5x2.62 Kalrez-FFKM - 75 Shore A - Black - SES-754318 O-ring Black167.6 mm  x 2.62 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 31.5x1.2 Kalrez-FFKM - 75 Shore A - Black - SES-758513 O-ring Black31.5 mm  x 1.2 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 1.2x1.9 Kalrez-FFKM - 75 Shore A - Black - SES-604752 O-ring Black1.2 mm  x 1.9 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 44.12x2.5 Kalrez-FFKM - 75 Shore A - Black - SES-609009 O-ring Black44.13 mm  x 2.5 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 160x2.3 Kalrez-FFKM - 75 Shore A - Black - SES-612786 O-ring Black161 mm  x 2.3 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 665x3.53 Kalrez-FFKM - 75 Shore A - Black - SES-617031 O-ring Black666 mm  x 3.53 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 405x20 Kalrez-FFKM - 75 Shore A - Black - SES-756060 O-ring Black405 mm  x 20 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 30.3x2.4 Kalrez-FFKM - 75 Shore A - Black - SES-608043 O-ring Black30.4 mm  x 2.4 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 135.5x4 Kalrez-FFKM - 75 Shore A - Black - SES-612249 O-ring Black135.6 mm  x 4 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 512x6 Kalrez-FFKM - 75 Shore A - Black - SES-616492 O-ring Black512 mm  x 6 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 421x9 Kalrez-FFKM - 75 Shore A - Black - SES-756182 O-ring Black422 mm  x 9 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 11.91x1.78 Kalrez-FFKM - 75 Shore A - Black - SES-606109 O-ring Black11.92 mm  x 1.78 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 73x3.55 Kalrez-FFKM - 75 Shore A - Black - SES-610381 O-ring Black73 mm  x 3.55 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 16.5x1 Kalrez-FFKM - 75 Shore A - Black - SES-606655 O-ring Black16.5 mm  x 1 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 86x4.5 Kalrez-FFKM - 75 Shore A - Black - SES-610855 O-ring Black86 mm  x 4.5 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 334x3.5 Kalrez-FFKM - 75 Shore A - Black - SES-615111 O-ring Black334 mm  x 3.5 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
Placeholder O-ring Black150 mm  x 15 mm FFKM - FFPM75 Shore A Jaicon-bekijk icon
O-Ring 28.19x1.52 Kalrez-FFKM - 75 Shore A - Black - SES-758407 O-ring Black28.20 mm  x 1.52 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.