Polytetrafluroethylene ( PTFE ) is a versatile engineering plastic having
a exceptional combination of many useful properties.
It is commercially known as PTFE.
Properties : PTFE has a number of noteworthy properties.
• Total resistance to virtually all chemicals including oxidising acids.
• Temperature resistance-service-temperature range -200oC to 260oC.
• Nonadhesive & anti-stick material.
• Lowest co-efficient of friction for all known materials & is self lubricating.
• Outstanding electrical properties over a wide frequency & temperature range.
• Non toxic non flammable.
• Excellent weathering resistance.
• Negligible water absorption.
Due to above characteristics PTFE finds many outlets in chemical, mechanical, electrical, defence & electronic industries. Our products such as seals, valve seats, packings bellows, bearings, protective linings, piston rings are currently in use in many industries. Apart from above components our company also offers stock shapes in rods & bushes of standard sizes.
We also offer PTFE Products
compounded with fillers to increase certain properties. This is done
using fillers such as Glass fibre, carbon, bronze, Aluminium etc.
ASTM - D 1457 / 87 BS
4271
Description
Unit
PTFE
Glass filled
PTFE
Bronze filled
PTFE
Carbon filled
PTFE
Tensile
Strength
Kg / CM2
250 to 300
170 to 240
180 to 240
>190 to 210
Hardness
Shore
"D"
50 to 55
65
71 to 73
71 to 73
Elongation
%
250 to 300
260 to 270
240
110 to 160
Dielectric
strength
Kv / mm
33
-
-
-
Cont.Service
Temp.
oC
-250o to +260o
-250o to + 260o
-250o to 260o
-250o to
+ 260o
Co-efficient of
Friction
-
0.06
0.12
0.11
0.11
Weathering
Resistance
-
Excellent
Excellent
Excellent
Excellent
Chemical
Resistance
PTFE is chemically inert and
unaffected by all known chemicals, except alkali metals, fluorine, under
certain conditions at elevated temperature. Filled PTFE has inferior
chemical resistance due to presence of certain filler but superior
mechanical properties as compared to PTFE.
