FFKM O-rings 70 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 70 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 70 Shore A made from FFKM, please send us a Direct Enquiry. Together we can discuss the specifications and find the right product for you.

142 products
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ProductDimensionsMaterialHardness (Shore A)CertificationStock
O-Ring 92.5x5.33 Kalrez-FFKM - 70 Shore A - White - SES-557259 O-ring WhitexFFKM - FFPM55 icon
O-Ring 116.8x6.99 Kalrez-FFKM - 70 Shore A - White - SES-557616 O-ring WhitexFFKM - FFPM54 icon
O-Ring 86.7x3 Kalrez-FFKM - 70 Shore A - White - SES-569572 O-ring WhitexFFKM - FFPM55 icon
O-Ring 264x5 Kalrez-FFKM - 70 Shore A - White - SES-571144 O-ring WhitexFFKM - FFPM55 icon
O-Ring 349.5x2.5 Kalrez-FFKM - 70 Shore A - White - SES-571564 O-ring WhitexFFKM - FFPM56 icon
O-Ring 10.92x0.79 Kalrez-FFKM - 70 Shore A - White - SES-805174 O-ring WhitexFFKM - FFPM57 icon
O-Ring 21x2.2 Kalrez-FFKM - 70 Shore A - White - SES-805730 O-ring WhitexFFKM - FFPM51 icon
O-Ring 81x5 Kalrez-FFKM - 70 Shore A - White - SES-557039 O-ring WhitexFFKM - FFPM56 icon
O-Ring 107.7x1.78 Kalrez-FFKM - 70 Shore A - White - SES-557489 O-ring WhitexFFKM - FFPM51 icon
O-Ring 77.6x1.25 Kalrez-FFKM - 70 Shore A - White - SES-569429 O-ring WhitexFFKM - FFPM50 icon
O-Ring 107.01x2.01 Kalrez-FFKM - 70 Shore A - White - SES-569840 O-ring WhitexFFKM - FFPM53 icon
O-Ring 342x3.5 Kalrez-FFKM - 70 Shore A - White - SES-571509 O-ring WhitexFFKM - FFPM55 icon
O-Ring 434x5 Kalrez-FFKM - 70 Shore A - White - SES-571933 O-ring WhitexFFKM - FFPM52 icon
O-Ring 20x6.5 Kalrez-FFKM - 70 Shore A - White - SES-805697 O-ring WhitexFFKM - FFPM53 icon
O-Ring 253x6 Kalrez-FFKM - 70 Shore A - White - SES-809261 O-ring WhitexFFKM - FFPM59 icon
O-Ring 323x9 Kalrez-FFKM - 70 Shore A - White - SES-809754 O-ring WhitexFFKM - FFPM60 icon
O-Ring 82x7 Kalrez-FFKM - 70 Shore A - White - SES-557056 O-ring WhitexFFKM - FFPM50 icon
O-Ring 111x4 Kalrez-FFKM - 70 Shore A - White - SES-557543 O-ring WhitexFFKM - FFPM57 icon
O-Ring 84.5x2 Kalrez-FFKM - 70 Shore A - White - SES-569542 O-ring WhitexFFKM - FFPM55 icon
O-Ring 267x4 Kalrez-FFKM - 70 Shore A - White - SES-571163 O-ring WhitexFFKM - FFPM55 icon
O-Ring 362.8x8.6 Kalrez-FFKM - 70 Shore A - White - SES-571618 O-ring WhitexFFKM - FFPM55 icon
O-Ring 15x9 Kalrez-FFKM - 70 Shore A - White - SES-805420 O-ring WhitexFFKM - FFPM53 icon
O-Ring 23x1.4 Kalrez-FFKM - 70 Shore A - White - SES-805822 O-ring WhitexFFKM - FFPM57 icon
O-Ring 298x3 Kalrez-FFKM - 70 Shore A - White - SES-809575 O-ring WhitexFFKM - FFPM54 icon
O-Ring 88x5.3 Kalrez-FFKM - 70 Shore A - White - SES-557161 O-ring WhitexFFKM - FFPM60 icon
O-Ring 118.31x3.53 Kalrez-FFKM - 70 Shore A - White - SES-557648 O-ring WhitexFFKM - FFPM54 icon
O-Ring 96x6.99 Kalrez-FFKM - 70 Shore A - White - SES-569681 O-ring WhitexFFKM - FFPM56 icon
O-Ring 316x6 Kalrez-FFKM - 70 Shore A - White - SES-571402 O-ring WhitexFFKM - FFPM52 icon
O-Ring 408x4 Kalrez-FFKM - 70 Shore A - White - SES-571815 O-ring WhitexFFKM - FFPM59 icon
O-Ring 19.4x1.3 Kalrez-FFKM - 70 Shore A - White - SES-805653 O-ring WhitexFFKM - FFPM53 icon
O-Ring 255x4.5 Kalrez-FFKM - 70 Shore A - White - SES-809279 O-ring WhitexFFKM - FFPM60 icon
O-Ring 90x2.5 Kalrez-FFKM - 70 Shore A - White - SES-557211 O-ring WhitexFFKM - FFPM60 icon
O-Ring 64.3x1.5 Kalrez-FFKM - 70 Shore A - White - SES-569215 O-ring WhitexFFKM - FFPM56 icon
O-Ring 100x4.5 Kalrez-FFKM - 70 Shore A - White - SES-569728 O-ring WhitexFFKM - FFPM52 icon
O-Ring 337x6 Kalrez-FFKM - 70 Shore A - White - SES-571494 O-ring WhitexFFKM - FFPM57 icon
O-Ring 11.8x3 Kalrez-FFKM - 70 Shore A - White - SES-805240 O-ring WhitexFFKM - FFPM52 icon
O-Ring 22.63x1.28 Kalrez-FFKM - 70 Shore A - White - SES-805809 O-ring WhitexFFKM - FFPM50 icon
O-Ring 303x3 Kalrez-FFKM - 70 Shore A - White - SES-809616 O-ring WhitexFFKM - FFPM51 icon
O-Ring 84x5.7 Kalrez-FFKM - 70 Shore A - White - SES-557088 O-ring WhitexFFKM - FFPM60 icon
O-Ring 58.17x6.35 Kalrez-FFKM - 70 Shore A - White - SES-569093 O-ring WhitexFFKM - FFPM58 icon