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:
PB10403 - 10% Graphite-Filled PTFE
PB10402 - 15% Graphite-Filled PTFE
Graphite-Filled PTFE Spec. Summary
|Property||Test Method||Units||10 Graphite||15 Graphite|
|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 ||621 |
|Glass Transition Temp.||ASTM D3418||°F [°C]||-143 [-97]; 246 ||-143 [-97]; 246 |
Material Available In:
Graphite-Filled PTFE Rods
Graphite-Filled PTFE Tubes
Graphite-Filled PTFE Sheets
Graphite-Filled PTFE Material Properties
Excellent wear properties
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 for Graphite-Filled PTFE
Dynamic reciprocating and rotary applications
Graphite-Filled PTFE Requirements
PB10403 meets ASTM D4745 Type I Grade 6 requirements.
PB10402 meets ASTM D4745 Type I Grade 7 and AMS 3678/2 requirements.
Graphite-Filled PTFE Material Data Sheet Downloads
PB10403 - Material Data Sheet
PB10402 - Material Data Sheet
Graphite-Filled PTFE 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