PTFE (Polytetrafluoroethylene)

PTFE is a synthetic fluoropolymer which is solid white in colour at room temperature and with soft and excellent low friction properties. PTFE is highly resistance to chemical and high electrical insulation as the combination of chemical and physical properties of PTFE is a consequence of its true fluorocarbon structure. It is available in the form of rods, tubes and sheets.

Application :-

PTFE widely used in seals & Gaskets, Valve and fitting components, chemical resistance applications, Bearing & Bushing, medical equipments, Semiconductor equipments.

Technical Data :-

Key Characteristics	Units	Values
Specific Gravity	Cm3	2.14 – 2.20
Tensile Strength	Psi	2000 – 3000
Compressive Strength	Psi	1700
Impact Strength	ft-lbs/in.	3.5
Elongation	%	300 – 500
Flexural Modulus	Psi	72000
Co-efficient of Friction		0.05 – 0.10
Thermal Conductivity	20 C	0.14
Thermal Expansion	10-6 K-1	135
Maximum Continuous Temperature	C	260
Melting Point	C	327
Volume Resistivity	7cm@23ºC	1018
Water Absorption (24 Hrs)	%	0.01

Smith Therm produces two kinds of PTFE rods :-

PTFE Extruded Rod:-

It is manufactured in paste extruded method in the diameter from 4 to 9mm and other are extruded from ram extruding method from 10 to 50 mm. The electrical insulation used under various kinds of frequency, the seal liner of various kinds of corrosivity medium, antisticiking materials, lubrication materials.

Tensile Strength	Elongation	Apparent Density
MPa	%	g/cm³
= 14	= 14	2.1 ~ 2.3

Diameter(mm)	Length (mm)	Tolerance
1,2,3,4	>2000	5
5,6,7,8,9	>2000	5

PTFE Molded Rod:-

The rods over 50mm in diameter are manufactured by moulding process.

Tensile Strength	Elongation	Apparent Density
MPa	%	g/cm³
= 14	= 14	2.1 ~ 2.3

Diameter(mm)	Length (mm)	Tolerance
4,5,6,7,8,10,12,15,16,18,20,25,30	1000, 2000	3.6
35,40,45,50,55,60,65,70,75,80,85
90, 95, 100, 110, 120, 130, 140, 150, 160
55,60,65,70,75,80,85,90.95	100 ~ 600	2.5
100, 110, 120, 130,140, 000, 000		2.5
180, 200,250, 270, 300, 000, 000		2

Smith Therm produces two kinds of PTFE Sheets :-

PTFE Molded Sheet:-

It is manufactured by molding with PTFE resin as it is the most chemical resistance of all known plastics. It does not age as it has the lowest co-efficient of friction of all known solid materials.

Applications:-

It is used to make corrosion resistant liner, seal, lining and gasket, scrap, guide rail and dielectric material for different uses.

Tensile Strength	MPa	≥ 15
Elongation	%	150 ~ 400
Apparent Density	g/cm3	2.2 ~ 2.3
Dielectric Strength	kV/mm	10
Resistance of Surface @ 500 Volt	Ω	3.7 x 1015

PTFE Skived Sheet:-

It is manufactured by molding with PTFE resin into work blank and then skived. It does not age as it has the lowest co-efficient of friction of all known solid materials.

Applications:-

It is used in reaction kettle, storage tank, valve, container, liner and gasket which under all kinds of corrosive electric. It is also used as liner of anti corrosive pipes, oilless lubricator and adhesive for sliding orbit of machines and dielectric at any frequencies.

Tensile Strength	MPa	≥ 15
Elongation	%	150 ~ 400
Apparent Density	g/cm3	2.2 ~ 2.3
Dielectric Strength	kV/mm	10
Resistance of Surface @ 500 Volt	Ω	3.7 x 1015
Note: We manufacture PTFE products in Sizes as per Customize requirements of our customers.