FFKM O-rings EN894

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ProductDimensionsMaterialHardness (Shore A)CertificationStock
O-Ring 28x1.1 Kalrez-FFKM - 75 Shore A - Black - SES-681512 O-ring Black28 mm  x 1.1 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 375x2 Kalrez-FFKM - 75 Shore A - Black - SES-685590 O-ring Black376 mm  x 2 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 41.02x2.16 Kalrez-FFKM - 75 Shore A - Black - SES-681969 O-ring Black41.03 mm  x 2.16 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 457x6.35 Kalrez-FFKM - 75 Shore A - Black - SES-686134 O-ring Black458 mm  x 6.35 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 11.4x2.1 Kalrez-FFKM - 75 Shore A - Black - SES-529955 O-ring Black11.4 mm  x 2.1 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 90x2.62 Kalrez-FFKM - 75 Shore A - Black - SES-534107 O-ring Black90 mm  x 2.62 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 429x4 Kalrez-FFKM - 75 Shore A - Black - SES-538293 O-ring Black430 mm  x 4 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 404x6.5 Kalrez-FFKM - 75 Shore A - Black - SES-528249 O-ring Black405 mm  x 6.5 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 50.5x3.5 Kalrez-FFKM - 75 Shore A - Black - SES-532799 O-ring Black50.6 mm  x 3.5 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 272x3 Kalrez-FFKM - 75 Shore A - Black - SES-536944 O-ring Black272 mm  x 3 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 29.2x0.7 Kalrez-FFKM - 75 Shore A - Black - SES-681566 O-ring Black29.3 mm  x 0.7 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 383x2 Kalrez-FFKM - 75 Shore A - Black - SES-685646 O-ring Black383 mm  x 2 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 64x2 Kalrez-FFKM - 75 Shore A - Black - SES-527532 O-ring Black64 mm  x 2 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 29.7x2.7 Kalrez-FFKM - 75 Shore A - Black - SES-531640 O-ring Black29.8 mm  x 2.7 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 174.3x5.33 Kalrez-FFKM - 75 Shore A - Black - SES-535788 O-ring Black174.4 mm  x 5.33 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 7.4x2.1 Kalrez-FFKM - 75 Shore A - Black - SES-680417 O-ring Black7.4 mm  x 2.1 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 219x7 Kalrez-FFKM - 75 Shore A - Black - SES-684500 O-ring Black219 mm  x 7 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 1.1x2 Kalrez-FFKM - 75 Shore A - Black - SES-528799 O-ring Black1.1 mm  x 2 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 56.5x3.5 Kalrez-FFKM - 75 Shore A - Black - SES-533046 O-ring Black56.6 mm  x 3.5 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 296x5 Kalrez-FFKM - 75 Shore A - Black - SES-537190 O-ring Black297 mm  x 5 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 36.83x1.19 Kalrez-FFKM - 75 Shore A - Black - SES-681815 O-ring Black36.84 mm  x 1.19 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 420x9 Kalrez-FFKM - 75 Shore A - Black - SES-685907 O-ring Black421 mm  x 9 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 15.6x1.5 Kalrez-FFKM - 75 Shore A - Black - SES-530415 O-ring Black15.6 mm  x 1.5 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 109.6x5.7 Kalrez-FFKM - 75 Shore A - Black - SES-534581 O-ring Black109.7 mm  x 5.7 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 506x8.5 Kalrez-FFKM - 75 Shore A - Black - SES-538746 O-ring Black506 mm  x 8.5 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 107x9 Kalrez-FFKM - 75 Shore A - Black - SES-683302 O-ring Black107 mm  x 9 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 20x1 Kalrez-FFKM - 75 Shore A - Black - SES-527159 O-ring Black20 mm  x 1 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 20.8x1.9 Kalrez-FFKM - 75 Shore A - Black - SES-530910 O-ring Black20.8 mm  x 1.9 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 132x4.4 Kalrez-FFKM - 75 Shore A - Black - SES-535072 O-ring Black132 mm  x 4.4 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 36x1.78 Kalrez-FFKM - 75 Shore A - Black - SES-527323 O-ring Black36 mm  x 1.78 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 35x10 Kalrez-FFKM - 75 Shore A - Black - SES-531981 O-ring Black35 mm  x 10 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 200.66x1.78 Kalrez-FFKM - 75 Shore A - Black - SES-536131 O-ring Black200.67 mm  x 1.78 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 12.5x1.3 Kalrez-FFKM - 75 Shore A - Black - SES-680762 O-ring Black12.5 mm  x 1.3 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 152x5.1 Kalrez-FFKM - 75 Shore A - Black - SES-683887 O-ring Black152 mm  x 5.1 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 2.97x1.07 Kalrez-FFKM - 75 Shore A - Black - SES-528956 O-ring Black2.97 mm  x 1.07 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 60.2x3 Kalrez-FFKM - 75 Shore A - Black - SES-533200 O-ring Black60.3 mm  x 3 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 312x3.5 Kalrez-FFKM - 75 Shore A - Black - SES-537345 O-ring Black313 mm  x 3.5 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 41.28x1.59 Kalrez-FFKM - 75 Shore A - Black - SES-681978 O-ring Black41.29 mm  x 1.59 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 448x14 Kalrez-FFKM - 75 Shore A - Black - SES-686081 O-ring Black449 mm  x 14 mm FFKM - FFPM75 Shore A Neeicon-bekijk icon
O-Ring 75x8 Kalrez-FFKM - 75 Shore A - Black - SES-533686 O-ring Black75 mm  x 8 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.