FEP Tubing Properties

Applications

  • Heat Shrink Tubing & Non-Shrink Tubing
  • Heat Exchangers
  • Medical Tubing
  • Telephone Primary wire-Coating Insulation
  • Conventional Wire-Coating insulation
  • Jacketing for Telephone and Conventional Primary Wires
  • Release Film
  • Valve & Chemical Equipment Lining
  • Cable (CAT V)
  • Foamed Coaxial Cable
  • Foamed Plenum Wires
  • Computer Interconnects
  • Fiber-optic Applications
  • Underground Sampling Water Lines
  • Coatings
    • Textile Dry Cans
    • Chemical Processing Equipment
    • Heat Sealing Equipment
    • Mold Release

Properties:

Electrical FEP exhibits most of the properties of PTFE. However, because of its excellent electrical FEP properties, FEP tubing is a valuable and versatile electrical insulator.

Chemical FEP tubing is inert to most chemicals and solvents, similar to PTFE

Weathering FEP tubing products are virtually unaffected by weather elements. Its resistance to extreme heat, cold, and UV radiation further suits FEP properties for electronic applications.

Insulation FEP Properties and Fire Protection

Fuels Heat Contributed (MJ/kg) Heat Contributed (BTU/lb)
Fuel Oil 41.9 18,000
Coal 23.3-32.6 10,000-14,000
Wood 18.6-23.3 8,000-10,000


Insulation Materials Heat Contributed (MJ/kg) Heat Contributed (BTU/lb)
Polyethylene 46.5 20,000
PVC 20.9-30.2 9,000-13,000
Rubber 23.3-32.6 10,000-14,000
FEP 5.1 2,200


Chemical Reasoning for FEP Properties

Reduced Chain Length Improved Flow (Retained Toughness)
Increased Chain Entanglement Improved Creep Resistance


FEP - Fluorinated ethylene propylene - TYPICAL PROPERTIES

Property Value Units Method
MECHANICAL PROPERTIES
Tensile Strength, 73°F 2100-3050
14.5 to 21
psi
MPa
 
Elongation, 73°F 240 - 300 %  
Flexural Strength, 73°F No break at flexure   D 790
Impact Strength, Izod No break    
Yield Strength
At 23 deg C
1740
12
psi
MPa
 
Density (as polymerized) 2.12 to 2.17 gm/cu.cm  
THERMAL PROPERTIES
Coefficient of Linear
Expansion
20 to 100 deg C
12 x 10-5 K-1 D 696
Melting Point 487 - 540
253 - 282
deg F
deg C
 
Thermal Conductivity 1.45
0.209
Btu/hr-.ft-deg F
W/m/deg K
 
Heat Distortion Temperature, 66 lb/sq.in (0.455 MPa) 158 to 171
70 - 77
deg F
deg C
D 648
Service Temperature -418 to 403
-250 to 206
deg F
deg C
 
Processing Temperature 698 - 743
370 - 395
deg F
deg C
 
ELECTRICAL PROPERTIES
Dielectric Strength, short time, 0.080” MV m-1    
Surface Arc-Resistance >300 (does not track) sec D 495
Volume Resistivity, dry, @ 50% RH >1018 ohm-cm D 257
Surface Resistivity, @ 100% RH 1016 Ohm/sq D 257
Dielectric Constant, 60 to 2 x 109 cps 2.1 ε D150-81
Dielectric Strength 13-100 kV mm-1 D149
Dissipation Factor @ 60 Hz - 1 MHz <0.0001   D150-81
OTHER PROPERTIES
Refractive Index 1.344 nD 25 D 542
Water Absorption <0.1 % D570-81
Flame Rating+ VE-0   UL-94
Limiting Oxygen Index 95 % Oxygen D 2863
Resistance to Weathering Excellent    
Specific Gravity 2.1-2.3   D792-66 (1979)
Coefficient of friction 0.27 – 0.67   D 1894
CO2 Permeability 273 Ng cm m-2 s-1  
O2 Permeability 637 Ng cm m-2 s-1  
N2 Permeability 91 Ng cm m-2 s-1  

 

+ Numerical rating for flame spread is not intended to reflect hazards presented by this or any other material under actual fire conditions

NOTE: The information, recommendations and opinions contained herein is only a guide and is intended solely for your consideration, inquiry and verification. The suitability of any material under specific conditions of application is not guaranteed in any manner. Fluorotherm Polymers Inc does not assume legal responsibility for the use of data presented here in any form, under any circumstances, any application, test or communication. Nothing contained herein is to be interpreted as a license or authorization to operate under or infringe any patent.