PI

Main Characteristics

extremely high max. allowable service temperature in air ( PI-1 : 240°C continuously, with short term excursions up to 450°C )

excellent retention of mechanical strength, stiffness and creep resistance over a wide range of temperatures

good sliding properties and excellent wear resistance

very good dimensional stability

inherent low flammability

good electrical insulating and dielectric properties ( only applies to PI-1 )

low outgassing ( except water )

high ionic purity level ( PI-1 )

excellent resistance against high energy radiation

Standard

Round ros
Ring & tubes
Plates


 

PI-1 ( chestnut ) / ( PI )

This is the unfilled base resin which provides maximum physical properties and best electrical and thermal insulation.

 

PI-21 ( grey-black ) / ( PI + graphite )

This grade contains 15% graphite, added to provide long wear and low friction.

 

PI-211 ( grey-black ) / ( PI + graphite + PTFE )

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-22 ( grey-black ) / ( PI + graphite )

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-3 ( grey-black ) / ( PI + MoS2 )

With 15% of molybdenum disulphide, this VESPEL grade provides internal lubrication for seals and bearings in vacuum or inert gases ( dry environments ).

 

Factory:No.202-1, HSING CHUNG 1 RD, LING YADIST, KAOHSIUNG, TAIWAN, R.O.C.
Tel:07-612-3933Fax:
07-612-3957 E-mail:susanl.fracher@fracher.com.tw