Polytetrafluorethylene (PTFE)

Wide temperature range and excellent chemical properties
Filter
Shopping Options
Material
Material additive
Abbreviated material designation
Color
Working temperature range
Conformity
Diameter
Length
Shopping Options
Material
Material additive
Abbreviated material designation
Color
Working temperature range
Conformity
Diameter
Length
18 products / 192 articles
View as Grid List

Items 1-12 of 18

Page
Set Descending Direction
  1. 01101515 PTFE round bar natural (white), 3 - 33 mm
    PTFE round bar natural (white), 3 - 33 mm
    Number of articles in this product: 13
  2. 01101516 PTFE round bar natural (white), 35 - 120 mm
    PTFE round bar natural (white), 35 - 120 mm
    Number of articles in this product: 15
  3. 01101517 PTFE round bar natural (white), 65 - 210 mm
    PTFE round bar natural (white), 65 - 210 mm
    Number of articles in this product: 16
  4. 01101520 PTFE N100 round bar natural (white)
    PTFE N100 round bar natural (white)
    Number of articles in this product: 32
  5. 01101550 PTFE polished h9 round bar natural (white)
    PTFE polished h9 round bar natural (white)
    Number of articles in this product: 17
  6. 01271515 PTFE HP 108 round bar dark red
    PTFE HP 108 round bar dark red
    Number of articles in this product: 5
  7. 01271519 PTFE HP 125 round bar creme
    PTFE HP 125 round bar creme
    Number of articles in this product: 5
  8. 01271516 PTFE HP 110 round bar black
    PTFE HP 110 round bar black
    Number of articles in this product: 5
  9. 01271518 PTFE HP 117 round bar black
    PTFE HP 117 round bar black
    Number of articles in this product: 4
  10. 01271517 PTFE HP 115 round bar light yellow
    PTFE HP 115 round bar light yellow
    Number of articles in this product: 5
View as Grid List

Items 1-12 of 18

Page
Set Descending Direction

Material properties of polytetrafluorethylene (PTFE)

PTFE (polytertrafluoroethylene) is a polymer with a linear macromolecular structure, created by polymerisation of tetrafluoroethylene. Its high viscosity as well as its high shear sensitivity do not allow thermoplastic processing using traditional techniques such as injection moulding and screw extrusion. PTFE is cold compression moulded and then sintered. Due to its unique combination of excellent properties, PTFE can be considered a special grade of engineering plastic.

Special features of PTFE include excellent chemical and hydrolysis resistance, good electrical insulation properties, an extremely low coefficient of sliding friction (lowest of all solids) and anti-adhesive surface properties. Furthermore, PTFE offers excellent UV and weathering resistance.

Special advantages of PTFE

The fact that PTFE is processed from ultra-fine powder as a press sintered part provides ideal conditions to produce compounds. PTFE alloys are therefore filled with mostly inorganic fillers, e.g. metal powders, to achieve very specific properties. The standard mixtures of PTFE compounds therefore have significant advantages regarding mechanical-thermal behavior:

- Increase of wear resistance

- Less deformation under load

- Lower thermal elongation

- Higher thermal conductivity

PTFE materials can be exposed to continuous operating temperatures of up to +260 °C and, with minimal mechanical stress, also briefly to peak temperatures of +280 °C. In this temperature range, there is no degradation of the structure (depolymerisation) which could change the properties. Even in the low-temperature range down to -200 °C, flexibility and elongation at break are virtually maintained. The coefficient of thermal expansion of PTFE reaches a peak at the glass transition temperature at +19 °C and reaches values which are otherwise only achieved at high temperatures.