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Fluorosint® 500 Enhanced PTFE offers an ideal combination of stability and wear resistance for sealing applications where tight dimensional control is required. Fluorosint® 500 also greatly reduces the risk of catastrophic system failure by becoming a sacrificial wear surface. With a deformation under load 9 times lower than virgin PTFE, Fluorosint® 500 allows designers to greatly improve the efficiency of systems without sacrificing the wear resistance and forgiving benefits of PTFE.

Fluorosint® 500 PTFE has nine times greater resistance to deformation under load than unfilled PTFE. Its coefficient of linear thermal expansion approaches the expansion rate of aluminum, and is 1/5 that of virgin PTFE, often eliminating fit and clearance problems. It is 1/3 harder than virgin PTFE, has better wear characteristics and maintains low frictional properties. Fluorosint® 500 PTFE is also non-abrasive to most mating materials.

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Technical Information

Stock Products Properties Applications Advantages Grades

Stock Products

Sheet 6.35-76.20mm Std sizes CTS Light Tan, Gray
Rod Dia. 12.70-222.25mm Std sizes CTS Light Tan, Gray
Tube O.D. 31.75-304.80mm Std sizes CTS Light Tan, Gray

Give us your cut-to-size dimensions. We will precision-cut these plastics to your exact size. Additional sizes and colors available upon request.


Physical PropertiesUnitsASTMResults
Density lb/in³ D792 0.084
Water Absorption, 24 hrs % D570 0.1
Mechanical PropertiesUnitsASTMResults
Tensile Strength psi D638 1100
Tensile Modulus psi D638 300000
Tensile Elongation @Break % D638 10
Flexural Strength psi D790 2200
Flexural Modulus psi D790 500000
Compressive Strength psi D695 4000
Compressive Modulus psi D695 250000
Hardness, Rockwell D785 R55
IZOD Impact Strength Notched ft-lb/in D256 0.9
Thermal PropertiesUnitsASTMResults
Coeffcient of Linear Thermal Expansion x 10^-5 in./in./°F D256 2.5
Heat Deflection Temp at 264 psi °F 270
Melting Temperature °F D3418 621
Max Operating Temp. °F 500
Electrical PropertiesUnitsASTMResults
Dielectric Strength. 1/8″ th. V/mil D149 275
Dielectric Constant @1 MHz D150 2.85
Dissipation Factor@1 MHz D150 0.008
Surface Resistivity @60 Hz ohms/sq D257 >10^13

NOTE: The property values presented above are typical values intended for reference and comparison purposes only. They should NOT be used as a basis for design specifications or quality control. Contact us for manufacturers’ complete material property datasheets. All values at 73°F (23°C) unless otherwise noted.


  • Split and one piece seals
  • Valve Seals
  • Shrouds
  • Slide bearings
  • Wear strips
  • Guides
  • Thrust washers


  • Low coefficient of thermal expansion
  • High load capability
  • Superior deformation under load
  • Continuous use temperatures to 500F
  • Chemical resistance parallels PTFE


  • Fluorosint® 207
  • Fluorosint® HPV
  • Fluorosint® MT-01
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