PTFE Virgin Grade has the lowest coefficient of all materials and is ideal in applications
where lubricants are not desirable. PTFE has the widest working temperature range of all
plastics, from -260°C to 260°C. PTFE is excellent for use in cryogenic applications as
shows no embrittlement. PTFE has very good sealing properties. PTFE is not flammable
unless in 94% oxygen environment and it is an excellent insulating material. PTFE is not
ideal in high wear abrasive applications or in high loading applications. Here filled PTFE is
used to improve resistance to load and wear.
APPLICATIONS-PTFE Virgin Grade
Chemical applications, sealing applications, insulating materials in demanding electrical
applications, and low friction applications. Gaskets, bearing pads, chemical equipment,
valve seats, valves in gas cylinders, bellows etc.
Glass filled PTFE is used to improve the creep resistance of PTFE over all temperature
ranges, while still allowing some compression required for sealing in both gaskets and
valves. Improved wear behavior is exhibited, while there is little effect on the electrical
properties, as glass fiber is an insulator. Glass has an exceptional resistance to water.
APPLICATIONS-Glass filled PTFE
Glass filled PTFE is ideal for high load bearing applications, against high hardness
surfaces. Examples of major applications are: bearings and bearing pads, piston rings,
valve seats & valve plugs and gaskets.
Carbon filled PTFE is primarily used in applications where higher thermal or electrical
conductivity is required, over and above conventional PTFE. This grade also exhibits
improved wear life and has very good compression properties, for loading applications.
Carbon filled PTFE has good abrasion resistance, load bearing, wear and frictional
properties under sliding conditions, ranging from dry to fully lubricated systems.
APPLICATIONS- Carbon filled PTFE:
Carbon filled PTFE is used in dynamic applications at high speed, as the thermal
conductivity decreases the wear of the material resulting from heat buildup. Examples of
these applications are: seal rings, piston rings and compressor rings. The good loading
properties enable the use of carbon filled PTFE in higher load gasketing applications.
Carbon is one of the best fillers to use in water applications.
Τεφλον Ράβδοι Φύλλα PTFE