PTFE Powder Compounding

Virgin PTFE Powder (polytetrafluoroethylene) is a thermopolymer used in a broad range of industry applications.
PTFE has a number of advantageous properties which are unique in the family of plastics:

  • An exceptionally broad temperature application range from -260°C up to 260°C
  • Almost universal chemical resistance
  • UV and weather resistant
  • Extremely low coefficient of friction
  • Anti stick properties
  • Good electric and dielectric properties
  • FDA Approved (physiologically harmless)
  • Hydrophobic (not water absorbent)

Isocomp will blend PTFE powder with other materials, known as fillers, to produce a compound product. These fillers are incorporated into PTFE to enhance or modify a number of properties that aren't characteristic of unfilled PTFE:

  • To increase wear resistance
  • Affect wear behaviour of the mating surface
  • To reduce creep under load
  • To increase thermal conductivity
  • To reduce thermal expansion
  • To modify electrical properties

Our engineers have the experience to advise on the right type of compound and compound mix that will best fit your engineering application.

PTFE Powder Compound Types

Isocomp manufactures the following PTFE compound types:

  • Non-Free Flow: For general compression moulding (offering the best physical properties)
  • Free Flow: For large part compression and isostatic moulding
  • Auto Mould: Fine free flowing material for automatic moulding machines

PTFE Powder Compound Fillers

Isocomp blends and compounds PTFE powder resin with other materials to achieve a fluoro polymer for the most demanding engineering solutions that has properties unique to the application performance required.

The most common fillers and the advantages of each when combined with PTFE Powder are are:


Filler Properties Common Applications
Significantly increases wear resistance, compressive strength and thermal conductivity Hydraulic seals (used in conjunction with MoS2 filler)
Reduces wear and deformation under load and increases thermal conductivity Bridge bearing pads
Carbon Fibre
Lowers creep, increases flexural and compressive modulus and raises hardness Anti static work surfaces
Improves wear resistance against soft dynamic surfaces and FDA approved Food contact components
Glass Fibre
Provides excellent wear resistance, lowers creep and improves compressive strength Hydraulic seals
Improves lubricity, load carrying capabilities, wear resistance and is chemically inert High speed bearings
(Molybdenum Disulphide) reduces friction, increases wear resistance and surface hardness Hydraulic seals (used in conjunction with Bronze filler)
Polyimide Reduces friction, excellent wear resistance, increase hardness and ideal for soft mating surfaces Shock absorber seals
Stainless Steel
Provides high wear resistance, improved load bearing capability and good chemical resistance Seals (where food contact is required), marine propeller shaft seals