FFKM O-rings EN9LT

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ProductDimensionsMaterialHardness (Shore A)CertificationStock
O-Ring 27x3.55 Kalrez-FFKM - 90 Shore A - Black - SES-543991 O-ring Black27 mm  x 3.55 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 437x7 Kalrez-FFKM - 90 Shore A - Black - SES-548117 O-ring Black438 mm  x 7 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 142.2x7.08 Kalrez-FFKM - 90 Shore A - Black - SES-583091 O-ring Black142.3 mm  x 7.08 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 26x2.3 Kalrez-FFKM - 90 Shore A - Black - SES-740481 O-ring Black26 mm  x 2.3 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 54.5x5.3 Kalrez-FFKM - 90 Shore A - Black - SES-544863 O-ring Black54.6 mm  x 5.3 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 8.7x2.65 Kalrez-FFKM - 90 Shore A - Black - SES-579826 O-ring Black8.7 mm  x 2.65 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 272.54x6.86 Kalrez-FFKM - 90 Shore A - Black - SES-584031 O-ring Black272.55 mm  x 6.86 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 55x1.35 Kalrez-FFKM - 90 Shore A - Black - SES-741343 O-ring Black55 mm  x 1.35 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 25x7 Kalrez-FFKM - 90 Shore A - Black - SES-543924 O-ring Black25 mm  x 7 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 417.9x7 Kalrez-FFKM - 90 Shore A - Black - SES-548052 O-ring Black417.10 mm  x 7 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 36.1x3.5 Kalrez-FFKM - 90 Shore A - Black - SES-544288 O-ring Black36.2 mm  x 3.5 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 633x5.33 Kalrez-FFKM - 90 Shore A - Black - SES-548415 O-ring Black633 mm  x 5.33 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 179.3x3.1 Kalrez-FFKM - 90 Shore A - Black - SES-583402 O-ring Black179.4 mm  x 3.1 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 34.5x2.35 Kalrez-FFKM - 90 Shore A - Black - SES-740783 O-ring Black34.6 mm  x 2.35 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 39.76x3 Kalrez-FFKM - 90 Shore A - Black - SES-544409 O-ring Black39.77 mm  x 3 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 2.9x0.45 Kalrez-FFKM - 90 Shore A - Black - SES-579381 O-ring Black2.9 mm  x 0.45 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 49.44x3.53 Kalrez-FFKM - 90 Shore A - Black - SES-544719 O-ring Black49.45 mm  x 3.53 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 187x7.04 Kalrez-FFKM - 90 Shore A - Black - SES-583459 O-ring Black187 mm  x 7.04 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 36.5x0.7 Kalrez-FFKM - 90 Shore A - Black - SES-740841 O-ring Black36.6 mm  x 0.7 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 427x20 Kalrez-FFKM - 90 Shore A - Black - SES-744999 O-ring Black427 mm  x 20 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 72.5x3.5 Kalrez-FFKM - 90 Shore A - Black - SES-545259 O-ring Black72.6 mm  x 3.5 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 14.1x2.4 Kalrez-FFKM - 90 Shore A - Black - SES-580235 O-ring Black14.1 mm  x 2.4 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 358x3.5 Kalrez-FFKM - 90 Shore A - Black - SES-584438 O-ring Black359 mm  x 3.5 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 74x14 Kalrez-FFKM - 90 Shore A - Black - SES-741753 O-ring Black74 mm  x 14 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 68.3x2.4 Kalrez-FFKM - 90 Shore A - Black - SES-582123 O-ring Black68.4 mm  x 2.4 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 7.65x1.37 Kalrez-FFKM - 90 Shore A - Black - SES-739484 O-ring Black7.65 mm  x 1.37 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 239x10 Kalrez-FFKM - 90 Shore A - Black - SES-743681 O-ring Black239 mm  x 10 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 51.5x2.65 Kalrez-FFKM - 90 Shore A - Black - SES-544769 O-ring Black51.6 mm  x 2.65 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 8.32x1.78 Kalrez-FFKM - 90 Shore A - Black - SES-579803 O-ring Black8.33 mm  x 1.78 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 8.5x1 Kalrez-FFKM - 90 Shore A - Black - SES-543063 O-ring Black8.5 mm  x 1 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 250x10 Kalrez-FFKM - 90 Shore A - Black - SES-547201 O-ring Black250 mm  x 10 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 71.5x7 Kalrez-FFKM - 90 Shore A - Black - SES-582183 O-ring Black71.6 mm  x 7 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 8.6x3 Kalrez-FFKM - 90 Shore A - Black - SES-739547 O-ring Black8.6 mm  x 3 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 247x10 Kalrez-FFKM - 90 Shore A - Black - SES-743743 O-ring Black247 mm  x 10 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 253.59x3.53 Kalrez-FFKM - 90 Shore A - Black - SES-541587 O-ring Black253.60 mm  x 3.53 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 200x2 Kalrez-FFKM - 90 Shore A - Black - SES-546846 O-ring Black200 mm  x 2 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 53.6x5.7 Kalrez-FFKM - 90 Shore A - Black - SES-581829 O-ring Black53.7 mm  x 5.7 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 4.34x0.41 Kalrez-FFKM - 90 Shore A - Black - SES-739195 O-ring Black4.34 mm  x 0.41 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 199x10 Kalrez-FFKM - 90 Shore A - Black - SES-743390 O-ring Black199 mm  x 10 mm FFKM - FFPM90 Shore A Jaicon-bekijk icon
O-Ring 19.43x2.52 Kalrez-FFKM - 90 Shore A - Black - SES-543685 O-ring Black19.44 mm  x 2.52 mm FFKM - FFPM90 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 N9LT 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 N9LT certified made from FFKM, please send us a Direct Enquiry. Together we can discuss the specifications and find the right product for you.