ANULON-220 Polytetrafluroethylene (PTFE)

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ANULON-220 Polytetrafluroethylene (PTFE) popularly known as Teflon is an inert, non-toxic material well known for its remarkable properties, such as, self lubrication, non adherence, non-inflammability and immunity to chemicals or solvents. Its dielectric constant and loss factor are low and stable accross a wide temperature and frequency range. Impact strength is high but tensile strength, wear resistance and creep resistance are low in comparison with other engineering plastics. Glass, bronze, carbon and graphite are added to improve specific mechanical properties to suit individual application. Its coefficient of friction is lower than almost any other material. Having excellent thermal properties, it has a wide working temperature range from - 80°C to 250°C.

Salient Features of ANULON-220

P.T.F.E. is not affected by any known solvents

Zero water absorption

No common acid or base is absorbed by P.T.F.E. at temperatures upto 250°C (480°F)

Non-toxic, non ageing and hygienic

High dielectric strength

Low dielectric constant - P.T.F.E. does not alter with frequency or temperature

Wide temperature range : -80°C to 250°C

Unaffected by weather

Non flammable

Excellent abrasion resistance

Self lubricant

Excellent machinability to close tolerances

Tough and flexible even at low temperature

Availability of ANULON-220

ANULON-220 PTFE (Teflon) Sheet

ANULON-220 PTFE (Teflon) Rod

ANULON-220 PTFE (Teflon) Bar

ANULON-220 PTFE (Teflon) Bush

ANULON-220 PTFE (Teflon) Tube

ANULON-220 PTFE (Teflon) Block

ANULON-220 PTFE (Teflon) Pad

ANULON-220 PTFE (Teflon) Gasket

ANULON-220 PTFE (Teflon) Washer

ANULON-220 PTFE (Teflon) Seal

ANULON-220 PTFE (Teflon) Packing

ANULON-220 PTFE (Teflon) Coating

ANULON-220 PTFE (Teflon) Raple

ANULON-220 PTFE (Teflon) Tape

ANULON-220 PTFE (Teflon) Machined Component

Properties of ANULON-220

Property

Unit

Test Method

Value

GENERAL

Density

gm/cc

DIN 53479

2.14 - 2.19

Water absorption

DIN 53495

<0.01

Combustibility

Non combustable

MECHANICAL

Tensile strength at 23°C

Mpa

DIN 53455

29 - 39

Elongation at break

DIN 53455

200 - 500

Modulus of elasticity

N/mm²

DIN 53457

600 - 800

Hardness

DIN 53505

55 - 72

Co-efficient of friction dynamic against
steel (Dry)

0.05 - 0.2

THERMAL

Melting temperature/Fusion point

°C

ASTM D 2116

327

Dimension stability under heat / heat
deflection temperature

°C

DIN 53461

50 - 60

Thermal conductivity at 23°C

W/k.m

DIN 52612

0.23

Specific heat at 23°C

KJ/Kg-k

1.01

Oxygen index

> 95

ELECTRICAL

Dielectric strength

KV/mm

40 - 80

> 95

Arc resistance

sec

ASTM D 495

> 360

Surface registivity

Ohm

ICE 93+167

1017

Volume resistivity

Ohm . cm

ICE 93+167

1018

Creep resistance

DIN 53480

KA3c

Dissipation factor
at 103 Hz
at 106 Hz

10-4

DIN 53483

2.0 - 2.1
2.0 - 2.1

Typical applications of ANULON-220

Bushing

‘O’ rings

Gaskets

Expansion bellows

Washers

Liners

Seals

Coatings