AFLAS®, also known as TFE/P, is a unique fluoroelastomer made of tetrafluoroethylene (TFE, FEPM) and propylene with a fluorine content of about 54%. It features very high amine resistance and electrical insulation compared to other fluoroelastomers and can handle high temperatures, chemicals and steam. AFLAS® fluoropolymer materials provide reliable sealing performance in critical applications in environments like water, steam, bases, and caustic resulting in common usage in the oil and drilling industry. It has a usual hardness range of 50-90 Shore A and is suited well for temperatures between -14° F to 428° F.

O-Rings made from AFLAS® are available. COR Manufacturing stock & sell high-quality AFLAS® Cord in red, blue, yellow and black colour. We can supply all standard metric sizes. We stock the following inch sizes:

CORD-.070-AFLAS CORD AFLAS 75D +/- .007"
CORD-.093-AFLAS CORD AFLAS 75D +/- .008"
CORD-.103-AFLAS CORD AFLAS 75D +/- .009"
CORD-.118-AFLAS CORD AFLAS 75D +/- .009"
CORD-.125-AFLAS CORD AFLAS 75D +/- .010"
CORD-.139-AFLAS CORD AFLAS 75D +/- .010"
CORD-.156-AFLAS CORD AFLAS 75D +/- .010"
CORD-.188-AFLAS CORD AFLAS 75D +/- .011"
CORD-.196-AFLAS CORD AFLAS 75D +/- .011"
CORD-.210-AFLAS CORD AFLAS 75D +/- .011"
CORD-.224-AFLAS CORD AFLAS 75D +/- .013"
CORD-.236-AFLAS CORD AFLAS 75D +/- .016"
CORD-.250-AFLAS CORD AFLAS 75D +/- .016"
CORD-.275-AFLAS CORD AFLAS 75D +/- .016"
CORD-.275-AFLAS-90 CORD AFLAS 90 DURO +/- .016"
CORD-.275AFL CORD AFLAS 75D +/- .016"
CORD-.295-AFLAS CORD AFLAS 75D +/- .016"
CORD-.313-AFLAS CORD AFLAS 75D +/- .016"
CORD-.334-AFLAS CORD AFLAS 75D +/- .016"
CORD-.354-AFLAS CORD AFLAS 75D +/- .016"
CORD-.375-AFLAS CORD AFLAS 75D +/- .016"
CORD-.394-AFLAS CORD AFLAS 75D +/- .020"
CORD-.437-AFLAS CORD AFLAS 75D +/- .020"
CORD-.472-AFLAS CORD AFLAS 75D +/- .022"
CORD-.500-AFLAS CORD AFLAS 75D +/- .022"
CORD-.625-AFLAS CORD AFLAS 75D +/- .025"


Being a unique fluoroelastomer AFLAS® has many advantages that include:

  • Excellent resistance to water, bases, caustic and steam
  • Excellent Heat Resistance and Heat Stability
  • Excellent Permeation Resistance
  • Extremely low aromatizing properties
  • Good Electrical Insulator
  • Fair Compression Set Resistance
  • Fair Shorter-Term Resilience
  • Resistant to ozone and gamma-ray radiation
  • High resistance to highly reactive organic and inorganic chemicals
  • Resistant to oils, solvents, amines and H2S
  • Superior performance in SIP, CIP and WFI applications


AFLAS® also has some limitations that include:

  • Not suitable to use with chlorinated hydrocarbons
  • Not suitable to use with ketones
  • Not suitable to use with organic refrigerants
  • Not suitable to use with aromatic fuels
  • Not suitable to use with carbon tetrachloride


COR can supply custom AFLAS® extrusion profiles in many sizes and shapes. Send us your requirements in a dwg., pdf or even on a napkin, with dimensions and we can try and quote according to your request.


AFLAS® is commonly used in industries like oil and gas, food and beverages, automotive, electronics, marine, chemical manufacturing. It is used to make o-rings, gaskets, wires, cables, oil seals and packings. Some common uses of AFLAS® O-rings include:

Marine Engines: Being anti-corrosive and offering similar chemical resistance as FFKM along with better elasticity, it is much more suitable in large diesel engines compared to FFKM. Moreover, it provides a cost advantage and more prolonged service over FFKM.

General Steam: Applications involving steam that contains even a little amount of anti-corrosive particles fail FKM. AFLAS® offering excellent steam resistance is an extremely suitable option for such applications.

Mechanical Seals: O-rings in mechanical seals have to undergo various chemicals in many application environments and AFLAS® offering superior chemical resistance compared to FKM is much more suitable for O-rings in such applications.

Downhole: In some geographic areas, O-rings utilized downhole are subject to corrosive gas like Hydrogen sulphide, high-temperature steam, or simple mud. Rubber parts made of AFLAS® last longer under these harsh conditions due to their high resistance to such environmental conditions.

Technical page in PDF format AFLAS

Check out other materials. For any question or more information, contact COR Manufacturing.


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