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Ptfe - Materials - Technical

PTFE - Polytetrafluoroethylene

HES Products made from this material
Balls, Cages on some Ceramic Bearings, Rod

A fluorocarbon based polymer with high chemical resistance, stability at low and high temperature, resistance to weathering, electrical and thermal insulation and extremely low coefficient of friction.

Properties of PTFE

Physical Properties
PROPERTY UNIT VALUE
Density g/cm3 2.15
Surface Hardness   SD63
Tensile Strength MPa 25
Flexural Modulus GPa 0.7
Notched Izod kJ/m 0.16
Linear Expansion per oC x 0.00015
Elongation at Break % 400
Strain at Yield % 70
Max Operating Temp. oC 180
Water Absorption % 0.01
Oxygen Index % 95
Flammability UL94 V0
Volume Resistivity log ohm.cm 18
Dielectric Strength MV/m 45
Dissipation Factor @ 1kHz 0.0001
Dielectric Constant @ 1kHz 2.1
Heat Deflection Temp. @ 0.45 MPa oC 121
Heat Deflection Temp. @ 1.80 MPa oC 54

Chemical Resistance
Chemical Resistance
Acids (Concentrated) Good
Acids (Dilute) Good
Alcohols Good
Alkalis Good
Aromatic hydrocarbons Good
Greases and Oils Good
Halogenated Hydrocarbon Good
Halogens Good
Ketones Good

Note! Property values are typical and should be used only as a guide to selection of materials and not as purchase specifications.


You can purchase online at Hobby and Engineering Supplies Online Catalogue pages.


For a huge range of bearings online please visit the Bearing Shop Online Website.

The Small Parts and Bearings has a much larger range of engineering supplies.

For the best range of miniature and small bearings please try the Miniature Bearings Australia website. Miniature Bearings Australia also list a large variety of miniature engineering products.



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Hobby and Engineering Supplies offers 2530 products in 281 categories including spare parts for remote control cars, assortment kits, kites, styrene, depron, ceramic and ceramic hybrid bearings, bearings, tools, belts and adhesives - see the full listing in the Online Catalogue. We have excellent Freight Rates within Australia and worldwide. We offer a choice of delivery with a signature required, or cheaper options with no signature required. The no signature required options are at the customer’s risk once the goods leave our store.

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