Vespel® (polyimide) is the trademark of a range of durable high-performance polyimide-based plastics manufactured by Dupont. Unlike most plastics, it does not produce significant out-gassing even at high temperatures, which makes it useful for lightweight heat shields and crucible support.

What is Vespel®?

Vespel® is an extremely high temperature, creep resistant plastic material that is often used in high heat environments where thermoplastic materials lose their mechanical properties. Vespel®, a lightweight alternative to metal, is available in a variety of formulations, including unfilled grades and several low friction and wear grades. It exhibits enhanced mechanical properties and superior thermal stability. It also performs well in vacuum applications, down to extremely low cryogenic temperatures.

The Vespel® products are highly durable polyimides used in demanding applications where exceptional thermal resistance, low wear and/or low friction, strength and impact resistance are desired. This high-performance polymer is mostly used in aerospace, semiconductor and transportation technology.

Key properties of Vespel®

  • Dimensional and thermal stability
  • Creep resistance
  • Excellent heat and chemical resistance
  • Performance in high pressure, high temperature and low temperature sealing solutions
  • Excellent bearing and wear properties
  • Electrical insulating

Popular applications for vespel®

  • Semiconductor and material handling machinery
  • Chip test sockets
  • Wafer clamping rings
  • Valve seats and sealing applications
  • Spline couplings
  • High performance bearings and bushings
  • Locking fasteners for aerospace
  • Pivot bushings on unison ring

Product support

Machine Parts (924.70 KB)

Material selector

Machined parts

High performance plastics take a lot of skill to machine, when you want to meet the most demanding specifications. To achieve tolerances of a few microns on these kind of materials demands expertise. Vanéflon has more than 40 years of experience in machining high performance plastics. Its specialized team of engineers will help you find the optimal solution for your machined part needs. Using in-house produced semi-finished products and high-quality machinery, our experienced craftsmen will produce your parts to exact specifications.

Material design, prototyping and customization capabilities are all present in-house. Vanéflon specializes in machining small to large series of high precision parts in a cost effective way. If size matters, it can mould and machine parts up to a diameter of 1.400 mm. Vanéflon can achieve high precision parts with tolerances down to 5 µm.