DuPont™ Vespel® – High-Performance Polyimide (PI) Engineering Plastic
Key Features
✔ Extreme Temperature Resistance
Continuous service at 260~300°C (short-term up to 480°C)
Excellent low-temperature performance (remains tough at -269°C)
✔ Self-Lubricating & Wear-Resistant
Naturally low friction coefficient (no external lubricants needed)
Resistant to plasma erosion (ideal for semiconductor processes)
✔ Outstanding Chemical Stability
Resistant to fuels, hydraulic fluids, and most acids/alkalis (except concentrated sulfuric acid/alkali)
✔ Insulation & Safety Certifications
UL-rated for low electrical/thermal conductivity
Complies with aerospace (AMS 3652) and nuclear industry standards
✔ Customizable Filler Formulations
Graphite/PTFE/MoS₂ fillers optimize friction/conductivity/load-bearing properties
Product Series & Filler Types
| Model | Color | Filler | Key Properties |
| SP-1 | Natural | Pure polyimide | High-purity insulating grade |
| SP-21 | Gray-Black | 15% Graphite | Enhanced thermal/electrical conductivity |
| SP-211 | Gray-Black | 15% Graphite + 10% PTFE | Ultra-low friction |
| SP-22 | Gray-Black | 40% Graphite | High conductivity/wear resistance |
| SP-3 | Gray-Black | 15% MoS₂ | Extreme-load lubrication |
Typical Applications
● Aerospace: Jet engine seals, Mars rover components
● Semiconductors: Plasma etch fixtures, wafer carriers
● Automotive: Turbocharger bearings, high-temperature sensors
● Energy: Nuclear reactor insulators, fuel cell parts
● Industrial: High-temperature pump valves, hot-press molds