FFKM O-rings EN894

close
FILTERS
Inner Diameter (mm) expand_more
Hardness (Shore A) expand_more

 

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.

19120 products
Most sold arrow_drop_down
ProductDimensionsMaterialHardness (Shore A)CertificationStock
O-Ring 7.5x1.2 Kalrez-FFKM - 75 Shore A - Black - SES-529458 O-ring Black7.5 x 1.2FFKM - FFPM75 Shore ANee58 icon
O-Ring 7.01x1.65 Kalrez-FFKM - 75 Shore A - Black - SES-529421 O-ring Black7.01 x 1.65FFKM - FFPM75 Shore ANee52 icon
O-Ring 61x2.5 Kalrez-FFKM - 75 Shore A - Black - SES-533217 O-ring Black61 x 2.5FFKM - FFPM75 Shore ANee53 icon
O-Ring 317.8x8.6 Kalrez-FFKM - 75 Shore A - Black - SES-537397 O-ring Black317.8 x 8.6FFKM - FFPM75 Shore ANee57 icon
O-Ring 40x11 Kalrez-FFKM - 75 Shore A - Black - SES-681926 O-ring Black40 x 11FFKM - FFPM75 Shore ANee58 icon
O-Ring 17x2 Kalrez-FFKM - 75 Shore A - Black - SES-527123 O-ring Black17 x 2FFKM - FFPM75 Shore ANee50 icon
O-Ring 26.1x1.5 Kalrez-FFKM - 75 Shore A - Black - SES-531381 O-ring Black26.1 x 1.5FFKM - FFPM75 Shore ANee56 icon
O-Ring 142.24x5.33 Kalrez-FFKM - 75 Shore A - Black - SES-474928 O-ring Black142.24 x 5.33FFKM - FFPM75 Shore ANee51 icon
O-Ring 26x3.5 Kalrez-FFKM - 75 Shore A - Black - SES-531373 O-ring Black26 x 3.5FFKM - FFPM75 Shore ANee52 icon
O-Ring 155x3.1 Kalrez-FFKM - 75 Shore A - Black - SES-535499 O-ring Black155 x 3.1FFKM - FFPM75 Shore ANee58 icon
O-Ring 3.56x1.78 Kalrez-FFKM - 75 Shore A - Black - SES-680101 O-ring Black3.56 x 1.78FFKM - FFPM75 Shore ANee57 icon
O-Ring 177.8x6.6 Kalrez-FFKM - 75 Shore A - Black - SES-684159 O-ring Black177.8 x 6.6FFKM - FFPM75 Shore ANee53 icon
O-Ring 53.57x3.53 Kalrez-FFKM - 75 Shore A - Black - SES-474804 O-ring Black53.57 x 3.53FFKM - FFPM75 Shore ANee51 icon
O-Ring 22.3x2.7 Kalrez-FFKM - 75 Shore A - Black - SES-531044 O-ring Black22.3 x 2.7FFKM - FFPM75 Shore ANee52 icon
O-Ring 141x3 Kalrez-FFKM - 75 Shore A - Black - SES-535242 O-ring Black141 x 3FFKM - FFPM75 Shore ANee51 icon
O-Ring 772x4 Kalrez-FFKM - 75 Shore A - Black - SES-539301 O-ring Black772 x 4FFKM - FFPM75 Shore ANee53 icon
O-Ring 152.4x4.87 Kalrez-FFKM - 75 Shore A - Black - SES-683897 O-ring Black152.4 x 4.87FFKM - FFPM75 Shore ANee52 icon
O-Ring 13.6x1.9 Kalrez-FFKM - 75 Shore A - Black - SES-530211 O-ring Black13.6 x 1.9FFKM - FFPM75 Shore ANee51 icon
O-Ring 100x1 Kalrez-FFKM - 75 Shore A - Black - SES-534339 O-ring Black100 x 1FFKM - FFPM75 Shore ANee53 icon
O-Ring 461x8.4 Kalrez-FFKM - 75 Shore A - Black - SES-538490 O-ring Black461 x 8.4FFKM - FFPM75 Shore ANee51 icon
O-Ring 90x6.25 Kalrez-FFKM - 75 Shore A - Black - SES-683021 O-ring Black90 x 6.25FFKM - FFPM75 Shore ANee56 icon
O-Ring 2.9x1.78 Kalrez-FFKM - 75 Shore A - Black - SES-474669 O-ring Black2.9 x 1.78FFKM - FFPM75 Shore ANee50 icon
O-Ring 21x5 Kalrez-FFKM - 75 Shore A - Black - SES-530928 O-ring Black21 x 5FFKM - FFPM75 Shore ANee57 icon
O-Ring 199.5x8.4 Kalrez-FFKM - 75 Shore A - Black - SES-536112 O-ring Black199.5 x 8.4FFKM - FFPM75 Shore ANee55 icon
O-Ring 11.7x5.8 Kalrez-FFKM - 75 Shore A - Black - SES-680717 O-ring Black11.7 x 5.8FFKM - FFPM75 Shore ANee54 icon
O-Ring 258x6.3 Kalrez-FFKM - 75 Shore A - Black - SES-684777 O-ring Black258 x 6.3FFKM - FFPM75 Shore ANee59 icon
O-Ring 60.4x3.1 Kalrez-FFKM - 75 Shore A - Black - SES-533205 O-ring Black60.4 x 3.1FFKM - FFPM75 Shore ANee57 icon
O-Ring 316x7 Kalrez-FFKM - 75 Shore A - Black - SES-537389 O-ring Black316 x 7FFKM - FFPM75 Shore ANee54 icon
O-Ring 40x5.9 Kalrez-FFKM - 75 Shore A - Black - SES-681922 O-ring Black40 x 5.9FFKM - FFPM75 Shore ANee56 icon
O-Ring 445x15 Kalrez-FFKM - 75 Shore A - Black - SES-686064 O-ring Black445 x 15FFKM - FFPM75 Shore ANee52 icon
O-Ring 40x1 Kalrez-FFKM - 75 Shore A - Black - SES-532267 O-ring Black40 x 1FFKM - FFPM75 Shore ANee58 icon
O-Ring 21.5x3.6 Kalrez-FFKM - 75 Shore A - Black - SES-530975 O-ring Black21.5 x 3.6FFKM - FFPM75 Shore ANee51 icon
O-Ring 134x2.5 Kalrez-FFKM - 75 Shore A - Black - SES-535105 O-ring Black134 x 2.5FFKM - FFPM75 Shore ANee59 icon
O-Ring 660x5.34 Kalrez-FFKM - 75 Shore A - Black - SES-539237 O-ring Black660 x 5.34FFKM - FFPM75 Shore ANee58 icon
O-Ring 67x4.5 Kalrez-FFKM - 75 Shore A - Black - SES-682593 O-ring Black67 x 4.5FFKM - FFPM75 Shore ANee55 icon
O-Ring 13.79x2.01 Kalrez-FFKM - 75 Shore A - Black - SES-530224 O-ring Black13.79 x 2.01FFKM - FFPM75 Shore ANee56 icon
O-Ring 100.5x4.5 Kalrez-FFKM - 75 Shore A - Black - SES-534357 O-ring Black100.5 x 4.5FFKM - FFPM75 Shore ANee52 icon
O-Ring 467x6 Kalrez-FFKM - 75 Shore A - Black - SES-538513 O-ring Black467 x 6FFKM - FFPM75 Shore ANee59 icon
O-Ring 92x8 Kalrez-FFKM - 75 Shore A - Black - SES-683050 O-ring Black92 x 8FFKM - FFPM75 Shore ANee53 icon
O-Ring 350x2.3 Kalrez-FFKM - 75 Shore A - Black - SES-685429 O-ring Black350 x 2.3FFKM - FFPM75 Shore ANee50 icon