Vespel versus PEEK

Author : Niels Conversiemarketeers | Published On : 31 Jul 2021

PEEK and Vespel both are highly regarded when it comes to high-performance plastics. They have a few common characteristics which make them a preferred material in many industries. Especially in high-heat and high-pressure environments, both polymers perform extremely well. So, what are the benefits and the key differences between Vespel and PEEK?

Shared benefits

PEEK and Vespel have a few interesting common features. These characteristics make them preferable in certain industries and environments.

  • High temperature resistance
  • Great creep resistance
  • Mechanical and chemical resistance
  • Great for machining and processing
  • Excellent electrical properties

Vespel versus PEEK: the differences

But now, the differences between PEEK and Vespel. The detail is in the differences and these will help you make the right choice in materials. Both high-performance plastics have their own advantages, which make them perfect for certain solutions. This is where both materials differ:

  • Vespel can withstand higher temperatures without losing its strength or endurance. Vespel can be used in temperatures up to 290 degrees Celsius. It can even endure heat peaks of up to 480 degrees.
  • Vespel has excellent bearing and wear properties. It even performs well without lubrication, which makes it a brilliant choice in extreme wear conditions.
  • Vespel doesn’t outgas, while most other thermoplastics do. This means Vespel can be used in a vacuum space without contaminating the space.
  • PEEK has a higher chemical resistance, even though both perform well with chemical products.
  • PEEK is a slightly stronger material. It can even be made more stress resilient by combining other materials in the mix.
  • PEEK is biocompatible, which makes it an excellent material for medical appliances.

Selecting the right thermo-plastic for your application

Whether PEEK or Vespel is the perfect thermo-plastic for your application depends on the requirements you have for the material. How though or strong does it need to be. What are operating conditions like? Do the parts have to perform in high temperature conditions, or do they have to be wear resistant? The answer to these questions also holds the solution to material choice.