FFKM O-rings EN894

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ProductDimensionsMaterialHardness (Shore A)CertificationStock
O-Ring 25.5x0.6 Kalrez-FFKM - 75 Shore A - Black - SES-681424 O-ring Black25.6 mm  x 0.6 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 369.5x8.4 Kalrez-FFKM - 75 Shore A - Black - SES-685552 O-ring Black369.6 mm  x 8.4 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 26.79x1.78 Kalrez-FFKM - 75 Shore A - Black - SES-527234 O-ring Black26.79 mm  x 1.78 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 7.2x2.4 Kalrez-FFKM - 75 Shore A - Black - SES-529439 O-ring Black7.2 mm  x 2.4 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 72x2.5 Kalrez-FFKM - 75 Shore A - Black - SES-533580 O-ring Black72 mm  x 2.5 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 359x10 Kalrez-FFKM - 75 Shore A - Black - SES-537765 O-ring Black359 mm  x 10 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 33.66x2.31 Kalrez-FFKM - 75 Shore A - Black - SES-531899 O-ring Black33.67 mm  x 2.31 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 192x5 Kalrez-FFKM - 75 Shore A - Black - SES-536024 O-ring Black192 mm  x 5 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 10.3x3.4 Kalrez-FFKM - 75 Shore A - Black - SES-680632 O-ring Black10.3 mm  x 3.4 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 247x5.7 Kalrez-FFKM - 75 Shore A - Black - SES-684696 O-ring Black247 mm  x 5.7 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 332x10 Kalrez-FFKM - 75 Shore A - Black - SES-685312 O-ring Black333 mm  x 10 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 47.63x3.53 Kalrez-FFKM - 75 Shore A - Black - SES-527432 O-ring Black47.64 mm  x 3.53 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 36x3.5 Kalrez-FFKM - 75 Shore A - Black - SES-532037 O-ring Black36 mm  x 3.5 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 204.2x5.7 Kalrez-FFKM - 75 Shore A - Black - SES-536166 O-ring Black204.3 mm  x 5.7 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 12.7x4.96 Kalrez-FFKM - 75 Shore A - Black - SES-680776 O-ring Black12.7 mm  x 4.96 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 30x4.5 Kalrez-FFKM - 75 Shore A - Black - SES-527267 O-ring Black30 mm  x 4.5 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 24.7x3.5 Kalrez-FFKM - 75 Shore A - Black - SES-531253 O-ring Black24.8 mm  x 3.5 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 148.59x5.33 Kalrez-FFKM - 75 Shore A - Black - SES-535387 O-ring Black148.60 mm  x 5.33 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 2.4x1.5 Kalrez-FFKM - 75 Shore A - Black - SES-679994 O-ring Black2.4 mm  x 1.5 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 75x1.8 Kalrez-FFKM - 75 Shore A - Black - SES-533674 O-ring Black75 mm  x 1.8 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 370x3.5 Kalrez-FFKM - 75 Shore A - Black - SES-537860 O-ring Black371 mm  x 3.5 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 58.8x6.9 Kalrez-FFKM - 75 Shore A - Black - SES-682400 O-ring Black58.9 mm  x 6.9 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 2.8x1.9 Kalrez-FFKM - 75 Shore A - Black - SES-528936 O-ring Black2.8 mm  x 1.9 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 57.71x4.75 Kalrez-FFKM - 75 Shore A - Black - SES-533095 O-ring Black57.72 mm  x 4.75 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 306x4 Kalrez-FFKM - 75 Shore A - Black - SES-537287 O-ring Black306 mm  x 4 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 37.08x2.62 Kalrez-FFKM - 75 Shore A - Black - SES-681830 O-ring Black37.09 mm  x 2.62 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 431.5x6 Kalrez-FFKM - 75 Shore A - Black - SES-685976 O-ring Black431.6 mm  x 6 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 320.27x3.53 Kalrez-FFKM - 75 Shore A - Black - SES-528195 O-ring Black320.28 mm  x 3.53 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 49.19x3.53 Kalrez-FFKM - 75 Shore A - Black - SES-532733 O-ring Black49.20 mm  x 3.53 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 264.5x8.4 Kalrez-FFKM - 75 Shore A - Black - SES-536862 O-ring Black264.6 mm  x 8.4 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 27x1.4 Kalrez-FFKM - 75 Shore A - Black - SES-681473 O-ring Black27 mm  x 1.4 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 367x8 Kalrez-FFKM - 75 Shore A - Black - SES-685538 O-ring Black367 mm  x 8 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 3.65x1.78 Kalrez-FFKM - 75 Shore A - Black - SES-529025 O-ring Black3.65 mm  x 1.78 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 60x1.5 Kalrez-FFKM - 75 Shore A - Black - SES-533179 O-ring Black60 mm  x 1.5 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 315x6.99 Kalrez-FFKM - 75 Shore A - Black - SES-537374 O-ring Black315 mm  x 6.99 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 40x1.25 Kalrez-FFKM - 75 Shore A - Black - SES-681919 O-ring Black40 mm  x 1.25 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 447x8 Kalrez-FFKM - 75 Shore A - Black - SES-686073 O-ring Black448 mm  x 8 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 79x2.6 Kalrez-FFKM - 75 Shore A - Black - SES-533777 O-ring Black79 mm  x 2.6 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 383x8.4 Kalrez-FFKM - 75 Shore A - Black - SES-537962 O-ring Black383 mm  x 8.4 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 62.5x1 Kalrez-FFKM - 75 Shore A - Black - SES-682505 O-ring Black62.6 mm  x 1 mm FFKM - FFPM75 Shore A Neeicon-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 N894 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 N894 certified made from FFKM, please send us a Direct Enquiry. Together we can discuss the specifications and find the right product for you.