FFKM O-rings 90 Shore A

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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 90 Shore A 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 90 Shore A made from FFKM, please send us a Direct Enquiry. Together we can discuss the specifications and find the right product for you.

273 products
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ProductDimensionsMaterialHardness (Shore A)CertificationStock
O-Ring 71x2.65 Kalrez-FFKM - 90 Shore A - Black - SES-550941 O-ring BlackxFFKM - FFPM55 icon
O-Ring 4x0.6 Kalrez-FFKM - 90 Shore A - Black - SES-579470 O-ring BlackxFFKM - FFPM50 icon
O-Ring 9.4x1.9 Kalrez-FFKM - 90 Shore A - Black - SES-579894 O-ring BlackxFFKM - FFPM50 icon
O-Ring 463x7 Kalrez-FFKM - 90 Shore A - Black - SES-591283 O-ring BlackxFFKM - FFPM54 icon
O-Ring 3.1x1.8 Kalrez-FFKM - 90 Shore A - Black - SES-642495 O-ring BlackxFFKM - FFPM51 icon
O-Ring 64x2.62 Kalrez-FFKM - 90 Shore A - Black - SES-647583 O-ring BlackxFFKM - FFPM52 icon
O-Ring 12.1x1.45 Kalrez-FFKM - 90 Shore A - Black - SES-739780 O-ring BlackxFFKM - FFPM55 icon
O-Ring 21.5x2.8 Kalrez-FFKM - 90 Shore A - Black - SES-740276 O-ring BlackxFFKM - FFPM54 icon
O-Ring 148.4x1.6 Kalrez-FFKM - 90 Shore A - Black - SES-742891 O-ring BlackxFFKM - FFPM58 icon
O-Ring 300x15 Kalrez-FFKM - 90 Shore A - Black - SES-770570 O-ring BlackxFFKM - FFPM60 icon
O-Ring 368x9 Kalrez-FFKM - 90 Shore A - Black - SES-771037 O-ring BlackxFFKM - FFPM53 icon
O-Ring 2.5x0.79 Kalrez-FFKM - 90 Shore A - Black - SES-785456 O-ring BlackxFFKM - FFPM51 icon
O-Ring 11.43x1.91 Kalrez-FFKM - 90 Shore A - Black - SES-787349 O-ring BlackxFFKM - FFPM53 icon
O-Ring 64.95x2.62 Kalrez-FFKM - 90 Shore A - Black - SES-793262 O-ring BlackxFFKM - FFPM57 icon
O-Ring 70x15 Kalrez-FFKM - 90 Shore A - Black - SES-793577 O-ring BlackxFFKM - FFPM54 icon
O-Ring 164x10 Kalrez-FFKM - 90 Shore A - Black - SES-797515 O-ring BlackxFFKM - FFPM57 icon
O-Ring 351x8 Kalrez-FFKM - 90 Shore A - Black - SES-801375 O-ring BlackxFFKM - FFPM59 icon
O-Ring 7.5x1.3 Kalrez-FFKM - 90 Shore A - Black - SES-543010 O-ring BlackxFFKM - FFPM54 icon
O-Ring 1.2x1.9 Kalrez-FFKM - 90 Shore A - Black - SES-579274 O-ring BlackxFFKM - FFPM57 icon
O-Ring 7.6x2.1 Kalrez-FFKM - 90 Shore A - Black - SES-579741 O-ring BlackxFFKM - FFPM55 icon
O-Ring 167x3 Kalrez-FFKM - 90 Shore A - Black - SES-583310 O-ring BlackxFFKM - FFPM54 icon
O-Ring 584x8.4 Kalrez-FFKM - 90 Shore A - Black - SES-591738 O-ring BlackxFFKM - FFPM52 icon
O-Ring 60.2x2.5 Kalrez-FFKM - 90 Shore A - Black - SES-647430 O-ring BlackxFFKM - FFPM58 icon
O-Ring 9.98x2.49 Kalrez-FFKM - 90 Shore A - Black - SES-739644 O-ring BlackxFFKM - FFPM60 icon
O-Ring 21x7 Kalrez-FFKM - 90 Shore A - Black - SES-740258 O-ring BlackxFFKM - FFPM60 icon
O-Ring 150x6.35 Kalrez-FFKM - 90 Shore A - Black - SES-742910 O-ring BlackxFFKM - FFPM58 icon
O-Ring 321x3.4 Kalrez-FFKM - 90 Shore A - Black - SES-770711 O-ring BlackxFFKM - FFPM50 icon
O-Ring 466x9 Kalrez-FFKM - 90 Shore A - Black - SES-771707 O-ring BlackxFFKM - FFPM57 icon
O-Ring 3x1.85 Kalrez-FFKM - 90 Shore A - Black - SES-785590 O-ring BlackxFFKM - FFPM54 icon
O-Ring 12x1.1 Kalrez-FFKM - 90 Shore A - Black - SES-787461 O-ring BlackxFFKM - FFPM52 icon
O-Ring 66.5x1.3 Kalrez-FFKM - 90 Shore A - Black - SES-793356 O-ring BlackxFFKM - FFPM56 icon
O-Ring 158.34x3.55 Kalrez-FFKM - 90 Shore A - Black - SES-797343 O-ring BlackxFFKM - FFPM60 icon
O-Ring 170x11 Kalrez-FFKM - 90 Shore A - Black - SES-797702 O-ring BlackxFFKM - FFPM54 icon
O-Ring 353x10 Kalrez-FFKM - 90 Shore A - Black - SES-770944 O-ring BlackxFFKM - FFPM59 icon
O-Ring 2.2x1.8 Kalrez-FFKM - 90 Shore A - Black - SES-785403 O-ring BlackxFFKM - FFPM50 icon
O-Ring 11.5x2.4 Kalrez-FFKM - 90 Shore A - Black - SES-787364 O-ring BlackxFFKM - FFPM53 icon
O-Ring 66x2 Kalrez-FFKM - 90 Shore A - Black - SES-793321 O-ring BlackxFFKM - FFPM60 icon
O-Ring 155x6.75 Kalrez-FFKM - 90 Shore A - Black - SES-797257 O-ring BlackxFFKM - FFPM52 icon
O-Ring 170x3.2 Kalrez-FFKM - 90 Shore A - Black - SES-797682 O-ring BlackxFFKM - FFPM57 icon
O-Ring 8.5x2.5 Kalrez-FFKM - 90 Shore A - Black - SES-543069 O-ring BlackxFFKM - FFPM54 icon