• PI
  • PI
  • PI

PI

Main Characteristics :
1. extremely high max. allowable service temperature in air ( PI-1 : 240°C continuously, with short term excursions up to 450°C )
2. excellent retention of mechanical strength, stiffness and creep resistance over a wide range of temperatures
3. good sliding properties and excellent wear resistance
4. very good dimensional stability
5. inherent low flammability
6. good electrical insulating and dielectric properties ( only applies to PI-1 )
7. low outgassing ( except water )
8. high ionic purity level ( PI-1 )
9. excellent resistance against high energy radiation

Standard :
‧Round ros
‧Ring & tubes
‧Plates
PI ( chestnut )  :
This is the unfilled base resin which provides maximum physical properties and best electrical and thermal insulation.

PI + graphite 15%( grey-black ) :
This grade contains 15% graphite, added to provide long wear and low friction.

PI + graphite 40% ( grey-black )  :
This grade containing 40% graphite has the wear and friction properties of PI-21 combined with improved dimensional stability (lowest coefficient of thermal expansion ).

PI + graphite + PTFE ( grey-black )  :
The incorporation of 15% graphite and 10% TEFLON® results in a VESPEL grade that exhibits the lowest coefficient of friction over a wide range of operating conditions and also has got the lowest wear rate up to 150°C.

PI + MoS2 ( grey-black )  :
With 15% of molybdenum disulphide, this VESPEL grade provides internal lubrication for seals and bearings in vacuum or inert gases ( dry environments ).