DESCRIPTION

Virgin PTFE is white in colour and a very rigid material. It has a wide range of applications which makes use of its extreme chemical resistance, low coefficient of friction, excellent insulation properties and thermal stability up to 250°C.
 
 SERVICE
 
Virtually resistant to all corrosive chemicals – with the exception of fluorine, some flourochemicals and molten alkali metals. Anti-stick and non-flammable. Fatigue resistant (especially in applications which involve flexing or vibrations)  
 
 
 
Max recommended temperatures : -200°C to +250°C
 
 

These temperature and pressure guides cannot necessarily

be used simultaneously and may not apply to all thicknesses.

APPROVALS/COMPLIANCE

 Non-flammable ASTM D635 & D470 Food Safe FDA 175.105 175.300 176.170 176.180 177.1520 177.2600 177.1550 177.2600 178.3570
 

WARNING

 PTFE has poor resistance to gamma radiation. For example, exposure to 70 megarads radiation reduces tensile strength by 50%.
ALL PRESSURES AND TEMPERATURES ARE SUBJECT TO INDIVIDUAL APPLICATION

TYPICAL PHYSICAL PROPERTIES VIRGIN PTFE

PROPERTY
METHOD
UNITS
SPECIFICATION
Specific Gravity ISO 13000-2 g/cm³ 2130 – 2180
Tensile Strength ISO 13000-2 MPa >20
Elongation ISO 13000-2 % >200
Hardness ISO 13000-2 Shore D >54
Ball Hardness ISO 13000-2 MPa >23
Compression Strength
@ 1% Deformation
KG/cm² >70
Deformation under load
140kg/cm² 24hrs @ 23°C
ASTM D621 % 10 – 17
Permanent Deformation
After 24 hrs, relaxation @ 23°C
ASTM D621 % 6 – 7.5
Coefficient of static friction ASTM D621 0.08 – 0.10
Coefficient of dynamic friction ASTM D621 0.06 – 0.08
Thermal Conductivity ASTM D621 W / m.K 0.24
Dielectric Constant (Ɛ)
At 60Hz to 2Ghz
ASTM D621 % 2.1
Dielectric Strength ASTM D621 KV/mm 20 – 70
Volume Resistivity ASTM D621 Ohm cm 10 18
Flammability ASTM VE-0
Water Absorption ASTM D621 % 0.01