Blog: Tefzel wire, benifits and uses in the 4x4 industry

Tefzel Wire: An Overview

Tefzel wire, also known as ETFE wire, is a type of insulated wire that is widely used in various applications. It is known for its excellent mechanical, electrical, and thermal properties, making it a popular choice for industries such as aerospace, defense, medical, and telecommunications. In this blog post, we'll discuss the benefits of using Tefzel wire and its applications.


Benefits of Tefzel Wire

There are several benefits to using Tefzel wire in your application. Here are a few of the most significant:

  1. Durability: Tefzel wire is known for its excellent durability and resistance to wear and tear. It can withstand high temperatures and harsh environments, making it ideal for use in demanding applications.

  2. Chemical Resistance: ETFE is resistant to a wide range of chemicals, including fuels, oils, and solvents. This makes Tefzel wire ideal for use in industries that require exposure to these substances.

  3. Low Dielectric Constant: The low dielectric constant of Tefzel wire means that it has a lower electrical capacitance. This makes it ideal for use in high-frequency applications where signal clarity is crucial.

  4. High Temperature Resistance: ETFE has a high melting temperature, making Tefzel wire suitable for use in high-temperature applications.


Applications of Tefzel Wire

Tefzel wire is used in a wide range of applications, including:

  1. Aerospace: Tefzel wire is commonly used in aerospace applications due to its ability to withstand high temperatures and harsh environments.

  2. Defense: Tefzel wire is used in military applications due to its high-temperature resistance and durability.

  3. Medical: Tefzel wire is used in medical applications due to its chemical resistance and low dielectric constant.

  4. Telecommunications: Tefzel wire is used in telecommunications applications due to its ability to transmit high-frequency signals with clarity.


Tefzel Wire vs PVC Automotive Wire:


Tefzel wire

  • Conductor: Tinned Copper
  • Insulation: Cross-Linked Ethylene Tetrafluoroethylene (XL-ETFE)
  • Voltage Rating: 600 Volts
  • Temperature Range: -65°c to +150°C (up to 300°c of short time periods)
  • Insulation thickness (12AWG): 0.12mm

Automotive wire

  • Conductor: Bare Copper
  • Insulation: Polyvinylchloride (PVC)
  • Voltage Rating: 300 Volts
  • Temperature Range: -40°C to +85°C
  • Insulation thickness (12AWG): 0.66MM



As you can see from the table above, the benefits of Tefzel wire are perfect for many applications in the 4x4 industry, particulary engine bay wiring, external wiring, and any high heat, high stress enviroment. The overall diameter of the wire is much smaller than standard automotive wire, which is why Tefzel is the number one choice in motorsport, particulary wiring looms. We do stock smaller lengths to cater for those small, 12-volt projects, without the need to order a minimum length.