Rubber O Rings and Seals, Rubber O Rings, Rubber Seals, O Rings Seals, Rubber Gasket, Mumbai, India  
   
 
 
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PTFE (POLYTETRAFLUOROETHYLENE) RODS

PTFE or Teflon, polytetrafluoroethylene, is made of fluorine and carbon bonds which provide one of the strongest chemical linkages by displaying a compact symmetrical arrangement of atoms. The result of this bond and chain configuration is relatively dense, chemically inert and thermally stable polymer.
PTFE has the ability to resist attacks of heat and most chemicals. PTFE rod exhibits the lowest electrical constant and lowest dissipation factors as compared to all the other solid materials. Also, because of strong chemical linkage, PTFE rod shows very little attraction for dissimilar molecules. The result of this phenomenon is low coefficient of friction of 0.05. Also, due to its chemical bonding the PTFE rods are virtually insoluble.

 
CHARACTERISTICS OF PTFE RODS

Some of the key characteristics of the PTFE rods are:

   
Outstanding resistance towards chemicals
Extremely low friction or coefficient of friction
It is soft and formable
It has excellent bearing and wearing properties.
It has great weathering resistance
It performs exceedingly well at elevated temperatures
It is considered as non-toxic
It has excellent dielectric properties
It has high anti adhesiveness
It has zero moisture absorption.
Also, it has excellent radiation resistance.
   
PROPERTIES OF PTFE ROD
   
FEP GRADE
PROPERTY UNIT 100 TE-9302N
MECHANICAL PROPERTY
Melt Flow Rate g/10min

6.6

3

Specific Gravity

 

2.15

2.12-2.17

Water Absorption, 24hr

% 0.004 <0.01

Tensile Strength, 23 °C

Psi 4,000 4,354
Elongation, 23 °C % 340 300
Compressive Strength, 23 °C at 5% strain psi 2,200 2,200
Impact Strength, 23 °C, Notched Izod J/m No break No break
Flexural Modulus, 23 °C psi 90,000 95,000
Durometer Hardness, Shore D D 56 55
Coefficient of Friction   0.25 0.25
Deformation Under Load, 23 °C, 1000 psi,

%

0.50 0.50
24 hr.      
THERMAL PROPERTIES
Melting Point

°C

   
Deflection Temperature (66 psi)

°C

   

Oxygen Index

%    
Max. Service Temperature °C    

Thermal Conductivity

W/m-K

   

Flammability

     
ELECTRICAL PROPERTY

Surface Resistivity

Ohm-sq

1015

1015

Volume Resistivity

Ohm-cm

1017 1018

Dielectric Strength (10 mil film)

V/mil

2,000

2,000

Dielectric Constant, 21 °C, 100 kHz

 

2.06

2.06

Dissipation Factor, 21 °C, 100kHz

 

0.0003

0.0002-0.001

Arc Resistance

sec

165

165

       
   
APPLICATIONS OF PTFE RODS
   
Some of the widely accepted applications of PTFE rods are:
   
It is widely used in scientific equipment
It is of great use in medical equipments
Used for chemical resistant tubing
It is used in the semi conductor equipments
It is used for pump spare parts
It is used for valve fitting components
It is used for the manufacture of coaxial cable connectors
It is also used in the making of transformers and capacitors.
Baffles are also made using PTFE.
   
AVIALABLE SIZES OF PTFE RODS
The most widely available sizes (in diameter) are 0.062" to 9.000". However, the custom sizes are designed and made on special request of the customers.
   
OPERATING TEMPERATURES
The PTFE rods maintain a high viscosity at 327 °C. However, PTFE can operate between -200 °C to +260 °C.
 
   
Address - 20, Aakruti Shopping Centre, Mathuradas Road, Kandivli (West),
Mumbai - 400 067, Maharashtra, INDIA.
Tel. : 91-22-28641532 / 28620476, Mob : 91-9820070877, Fax : 91-22-28620476

Web : www.oringsseals.com / www.siliconetubings.net
 
 
 
 
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