Teflon™ AF Resins

A Fluoropolymer with Optical Clarity and Gas Permeability

Teflon™ AF (amorphous fluoropolymer) resins have the same excellent optical clarity and mechanical properties of amorphous polymers. These resins also perform well over a wide range of temperatures and maintain outstanding electrical properties and chemical resistance. A unique chemical structure enhances their versatility and distinguishes this class from other fluoropolymers.

Features and Benefits

As high-performance fluoropolymer resins, Teflon™ AF resins offer chemical resistance and high thermal resistance. The special molecular structure of these amorphous fluoropolymer resins offer additional benefits, which include:

  • Optical clarity
  • Low refractive index
  • Exceptional UV stability and transmission capability
  • Dimensional stability
  • Reduced mold shrinkage
  • Low dielectric constant (1.89 to 1.93), even at gigahertz frequencies
  • Low dissipation factor and moisture sensitivity/moisture absorption
  • High compressibility and gas permeability
  • Solubility in perfluorinated solvents

Teflon™ AF Grades

Teflon™ AF is available as a powdered resin or solution in two grades: AF 1600X (*Tg 160 °C [320 °F]) and AF 2400X-J (Tg 240 °C [464 °F]).

AF 1600X
AF 2400X-J

AF 2400 1%
AF 1601 6%
AF 1601 18%

For more information, see the Teflon™ AF Resins Performance and Processing pages.

*Tg is the glass transition temperature


Teflon™ AF resins can be used in unlimited applications to meet current and future material challenges.

Optical Materials

Teflon™ AF products offer plenty of flexibility. They function as a clear coating for optical devices requiring a low refractive index. They also perform well in aggressive chemical environments with disparate temperatures and light waves (UV-IR).

Applications in this category include lens covers for microwave, radar, and optical devices; fiber optics, optical cladding; optoelectronic devices; UV cells and windows; passivation and protective coatings; and anti-reflective coatings for optical devices.

3D Printing

The optical clarity and gas permeability of films made with Teflon™ AF products enable efficient 3D printing and manufacturing.

Semiconductors and Processing Materials

Thanks to good dimensional stability, rigidity at high-use temperatures, and chemical inertness, Teflon™ AF products provide critical electrical properties for the next generation of computer chips.

Dielectric Materials

Teflon™ AF products are easy to mold and spin cast. Other uses include passivation layers and encapsulation for hybrid/sandwich integrated circuit packaging.

Biomedical Materials

Teflon™ AF solutions can be coated onto other substrates to enhance biocompatibility for optical sensing and diagnostic applications. They can also be used as a potential separation media for gases and liquids.

Teflon™ is a trademark of The Chemours Company FC, LLC. The Teflon™ brand name is licensed by Chemours in association with approved applications. Without a trademark license, customers may not identify their product with the Teflon™ brand name. Unlicensed customers may refer to the Chemours product offering with only the Chemours product code number and product identifier name or descriptor as Chemours sells its product offerings. There are no fair use rights to use the Teflon™ trademark by buying from Chemours, a Chemours customer or a distributor without a trademark license from Chemours. If you are interested in applying for our Teflon™ brand trademark licensing agreement contact Chemours.