Graphite-Filled PTFE

Graphite-filled PTFE materials have much better wear resistance than virgin PTFE materials with slightly higher coefficients of friction. Graphite-filled PTFE materials have better extrusion resistance than virgin PTFE materials.

They are typically used in seal components for rotatory and reciprocating applications and can be used to seal against steel, stainless steel, chromium plating, bronze, bare or anodized aluminum and aluminum alloys, and ceramic coatings.

PBY Material Codes:

PB10403M - 10% Graphite Filled PTFE

PB10402G - 15% Graphite Filled PTFE

Order Material
Spec. Summary
Property Test Method Units 10% Graphite Filled 15% Graphite Filled
Color - - Black Black
Specific Gravity ASTM D792 - 2.100 - 2.200 2.100 - 2.200
Hardness Shore D ASTM D2240 - 61 - 71 59 - 69
Tensile Strength, min. ASTM D4745 PSI [MPa] 2,600 [17.9] 2,000 [13.8]
Elongation at Break, min. ASTM D4745 % 120 100
Second Melt Peak Temp. ASTM D3418 °F [°C] 621 [327] 621 [327]
Glass Transition Temp. ASTM D3418 °F [°C] -143 [-97]; 246 [119] -143 [-97]; 246 [119]

Graphite PTFE Properties

  • Chemically Inert

  • Excellent wear proerties

  • High load carrying capabilities in high speed contact applications

  • Extreme reduction in coefficient of friction

  • Better extrusion and wear resistance than virgin PTFE materials

Typical Applications

  • Dynamic reciprocating and rotary applications


PB10402G meets ASTM D4745 Type I Grade 7 and AMS 3678/2 requirements.

PB10403M meets ASTM D4745 Type I Grade 6 requirements.


PB10403M - Material Data Sheet

PB10402G - Material Data Sheet

Spec. Compliance



  • Wypych, George. Handbook of Polymers. 2nd Ed., ChemTec/Publishing, 2016.
  • Ebnesjjad, Sina. Fluoroplastics Vol1 & Vol2. 2nd Ed., Elsevier Inc., 2015.
  • Aerospace Materials Specifications for PTFE materials (AMS3678)
  • American Society for Testing and Materials (ASTM) Standards