Straight Talk

PTFE (Teflon) – Virgin

Chemical Name: PolyTetraFluoroEthylene
   
Abbreviation: PTFE
   
Common/ Trade Names: Teflon®, Rulon®, Hostaflon
   
Properties:  

*Colour

White in Virgin form

*Form

Sheet, Rod, Tube and Block
   
Grades: Grades of PTFE are varied by the addition of fillers

Virgin (no filler), Glass fibre filled 15% and 25%, Carbon Filled, Bronze Filled

   
Applications: Back up washers, Bearing pads

Cup seals, Scraper Blades

V-packing, Plain Bearing Bushing

Lantern rings, O-Rings

   
Machining: Very good
   
Types:  
   
Advantages: Does not absorb moisture

Low coefficient of friction

Tolerant of high temperature useful up to 200°C

Very good in contact with soft materials

Very good frictional characteristics between ‘Static’ and ‘Dynamic’ friction that is in “slip stick” application

Electrical insulation, Food Grade compatibility (Virgin)

   
Disadvantages: Low tensile strength and Compressive strength

Higher wear rate mainly due to comparatively lower mechanical properties,

High linear expansion

Higher Cost

   
Chemical Resistance: PTFE is considered to be a very Chemical resistant material.
   
   

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