Q: Polyimide / Vespel fasteners and their high temperature capabilities
A: This client is developing a new oven application and was interested in Polyimide fasteners and their high temperature capabilities. In particular they needed:
- Usability to 300°C
- Capability with metal connections
- Heat and electric insolation
- Used in a hot box of steel
Polyimide or Vespel fasteners are a good thermal and electrical isolator for your application. It is heat resistant to 300°C (572°F) continuous use and 500°C (932°F) intermittent. I also has a 3.55 dielectric constant at 1MHz. The only drawback for using polyimide is that it is an expensive option.
Here is a great video by DuPont on the heat resistance of polyimide compared to other polymers: http://www.dupont.com/products-and-services/plastics-polymers-resins/parts-shapes/videos/polyimide-heat-resistance-vespel.html