FFKM O-rings EN993

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ProductDimensionsMaterialHardness (Shore A)CertificationStock
O-Ring 173x5.3 Kalrez-FFKM - 90 Shore A - Black - SES-797767 O-ring Black174 mm  x 5.3 mm FFKM - FFPM90 Shore A Neeicon-bekijk icon
O-Ring 435x4 Kalrez-FFKM - 90 Shore A - Black - SES-802636 O-ring Black436 mm  x 4 mm FFKM - FFPM90 Shore A Neeicon-bekijk icon
O-Ring 5.8x1.84 Kalrez-FFKM - 90 Shore A - Black - SES-786156 O-ring Black5.8 mm  x 1.84 mm FFKM - FFPM90 Shore A Neeicon-bekijk icon
O-Ring 46x1 Kalrez-FFKM - 90 Shore A - Black - SES-791812 O-ring Black46 mm  x 1 mm FFKM - FFPM90 Shore A Neeicon-bekijk icon
O-Ring 135x10.2 Kalrez-FFKM - 90 Shore A - Black - SES-796578 O-ring Black135 mm  x 10.2 mm FFKM - FFPM90 Shore A Neeicon-bekijk icon
O-Ring 365x6 Kalrez-FFKM - 90 Shore A - Black - SES-801587 O-ring Black365 mm  x 6 mm FFKM - FFPM90 Shore A Neeicon-bekijk icon
O-Ring 4.95x0.38 Kalrez-FFKM - 90 Shore A - Black - SES-785976 O-ring Black4.95 mm  x 0.38 mm FFKM - FFPM90 Shore A Neeicon-bekijk icon
O-Ring 53.34x6.35 Kalrez-FFKM - 90 Shore A - Black - SES-792423 O-ring Black53.35 mm  x 6.35 mm FFKM - FFPM90 Shore A Neeicon-bekijk icon
O-Ring 156.59x3.48 Kalrez-FFKM - 90 Shore A - Black - SES-797299 O-ring Black156.60 mm  x 3.48 mm FFKM - FFPM90 Shore A Neeicon-bekijk icon
O-Ring 455x22 Kalrez-FFKM - 90 Shore A - Black - SES-802902 O-ring Black456 mm  x 22 mm FFKM - FFPM90 Shore A Neeicon-bekijk icon
O-Ring 10x5 Kalrez-FFKM - 90 Shore A - Black - SES-787093 O-ring Black10 mm  x 5 mm FFKM - FFPM90 Shore A Neeicon-bekijk icon
O-Ring 67x2.1 Kalrez-FFKM - 90 Shore A - Black - SES-793378 O-ring Black67 mm  x 2.1 mm FFKM - FFPM90 Shore A Neeicon-bekijk icon
O-Ring 249.2x5.7 Kalrez-FFKM - 90 Shore A - Black - SES-799501 O-ring Black249.3 mm  x 5.7 mm FFKM - FFPM90 Shore A Neeicon-bekijk icon
O-Ring 32.7x3.53 Kalrez-FFKM - 90 Shore A - Black - SES-790531 O-ring Black32.8 mm  x 3.53 mm FFKM - FFPM90 Shore A Neeicon-bekijk icon
O-Ring 144.01x4.19 Kalrez-FFKM - 90 Shore A - Black - SES-796892 O-ring Black144.02 mm  x 4.19 mm FFKM - FFPM90 Shore A Neeicon-bekijk icon
O-Ring 499x6 Kalrez-FFKM - 90 Shore A - Black - SES-803498 O-ring Black499 mm  x 6 mm FFKM - FFPM90 Shore A Neeicon-bekijk icon
O-Ring 6.35x1.52 Kalrez-FFKM - 90 Shore A - Black - SES-786293 O-ring Black6.35 mm  x 1.52 mm FFKM - FFPM90 Shore A Neeicon-bekijk icon
O-Ring 74.3x2 Kalrez-FFKM - 90 Shore A - Black - SES-793783 O-ring Black74.4 mm  x 2 mm FFKM - FFPM90 Shore A Neeicon-bekijk icon
O-Ring 292.1x6.35 Kalrez-FFKM - 90 Shore A - Black - SES-800339 O-ring Black292.2 mm  x 6.35 mm FFKM - FFPM90 Shore A Neeicon-bekijk icon
O-Ring 2.4x0.9 Kalrez-FFKM - 90 Shore A - Black - SES-785439 O-ring Black2.4 mm  x 0.9 mm FFKM - FFPM90 Shore A Neeicon-bekijk icon
O-Ring 56.5x7 Kalrez-FFKM - 90 Shore A - Black - SES-792653 O-ring Black56.6 mm  x 7 mm FFKM - FFPM90 Shore A Neeicon-bekijk icon
O-Ring 261x7 Kalrez-FFKM - 90 Shore A - Black - SES-799746 O-ring Black261 mm  x 7 mm FFKM - FFPM90 Shore A Neeicon-bekijk icon
O-Ring 22.75x1.38 Kalrez-FFKM - 90 Shore A - Black - SES-789246 O-ring Black22.76 mm  x 1.38 mm FFKM - FFPM90 Shore A Neeicon-bekijk icon
O-Ring 132x10 Kalrez-FFKM - 90 Shore A - Black - SES-796459 O-ring Black132 mm  x 10 mm FFKM - FFPM90 Shore A Neeicon-bekijk icon
O-Ring 540x3 Kalrez-FFKM - 90 Shore A - Black - SES-803745 O-ring Black541 mm  x 3 mm FFKM - FFPM90 Shore A Neeicon-bekijk icon
O-Ring 20.36x1.78 Kalrez-FFKM - 90 Shore A - Black - SES-788909 O-ring Black20.37 mm  x 1.78 mm FFKM - FFPM90 Shore A Neeicon-bekijk icon
O-Ring 157x15 Kalrez-FFKM - 90 Shore A - Black - SES-797313 O-ring Black157 mm  x 15 mm FFKM - FFPM90 Shore A Neeicon-bekijk icon
O-Ring 3.25x0.64 Kalrez-FFKM - 90 Shore A - Black - SES-785631 O-ring Black3.25 mm  x 0.64 mm FFKM - FFPM90 Shore A Neeicon-bekijk icon
O-Ring 81x5.3 Kalrez-FFKM - 90 Shore A - Black - SES-794166 O-ring Black81 mm  x 5.3 mm FFKM - FFPM90 Shore A Neeicon-bekijk icon
O-Ring 372.8x8.6 Kalrez-FFKM - 90 Shore A - Black - SES-801706 O-ring Black372.9 mm  x 8.6 mm FFKM - FFPM90 Shore A Neeicon-bekijk icon
O-Ring 78x4.26 Kalrez-FFKM - 90 Shore A - Black - SES-793988 O-ring Black78 mm  x 4.26 mm FFKM - FFPM90 Shore A Neeicon-bekijk icon
O-Ring 496x5.5 Kalrez-FFKM - 90 Shore A - Black - SES-803468 O-ring Black497 mm  x 5.5 mm FFKM - FFPM90 Shore A Neeicon-bekijk icon
O-Ring 61.3x1.78 Kalrez-FFKM - 90 Shore A - Black - SES-793010 O-ring Black61.4 mm  x 1.78 mm FFKM - FFPM90 Shore A Neeicon-bekijk icon
O-Ring 335x9.2 Kalrez-FFKM - 90 Shore A - Black - SES-801106 O-ring Black335 mm  x 9.2 mm FFKM - FFPM90 Shore A Neeicon-bekijk icon
O-Ring 63.88x2.62 Kalrez-FFKM - 90 Shore A - Black - SES-793186 O-ring Black63.89 mm  x 2.62 mm FFKM - FFPM90 Shore A Neeicon-bekijk icon
O-Ring 585x8.4 Kalrez-FFKM - 90 Shore A - Black - SES-803947 O-ring Black586 mm  x 8.4 mm FFKM - FFPM90 Shore A Neeicon-bekijk icon
O-Ring 2.8x1.8 Kalrez-FFKM - 90 Shore A - Black - SES-785528 O-ring Black2.8 mm  x 1.8 mm FFKM - FFPM90 Shore A Neeicon-bekijk icon
O-Ring 132x2.4 Kalrez-FFKM - 90 Shore A - Black - SES-796442 O-ring Black132 mm  x 2.4 mm FFKM - FFPM90 Shore A Neeicon-bekijk icon
O-Ring 107x2.1 Kalrez-FFKM - 90 Shore A - Black - SES-795400 O-ring Black107 mm  x 2.1 mm FFKM - FFPM90 Shore A Neeicon-bekijk icon
O-Ring 5.94x2.01 Kalrez-FFKM - 90 Shore A - Black - SES-786176 O-ring Black5.94 mm  x 2.01 mm FFKM - FFPM90 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 N993 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 N993 certified made from FFKM, please send us a Direct Enquiry. Together we can discuss the specifications and find the right product for you.