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
|Property||Test Method||Units||10% Graphite Filled||15% Graphite Filled|
|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 |
Graphite PTFE Properties
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
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
- 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