Super engineering plastics ：Polyimide(PI)
- High and low temperature resistance: Long term use temperature range -269~300 ℃, short-term use temperature can reach above 400 ℃;
- Wear resistance: Under non lubricated conditions, the critical value of PV is more than 10 times that of general engineering plastics, which can resist strong shaking wear and impact wear；
- Heat resistant deformation: It will not melt or soften at high temperatures and can withstand high loads;
- Insulation: insulation strength higher than 20KV/mm;
- Chemical resistance: resistant to lubricating oil and solvents;
- Excellent machining performance;
Application：
- Wafer pressure ring;
- Test stand；
- Socket;
- Top needle（Pin）
- Pentip；