Carbon filled PTFE sheet offers enhanced dimensional stability and a reduced coefficient of thermal expansion compared to standard PTFE grades. It is highly chemical resistant, exhibits good compressive strength, and is classified as partially electrically conductive and anti-static. With 25% carbon filling, this PTFE variant shows improved resistance to creep, deformation, and wear relative to virgin PTFE, although its mechanical strength remains modest compared to other engineering plastics like polyethylene. Compared to glass filled PTFE, it demonstrates lower deformation under load and a higher kinetic coefficient of friction.
This polymer is often chosen for high-speed applications that require electrical charge dissipation and low friction. Carbon filled PTFE sheets are often precision machined into shaft bearings, gaskets, shaft seals, pump parts, and components for electronic devices. Henry Gallacher offers expert machining services for PTFE, tailored to your specifications from drawings or samples, utilising our in-house CNC equipment. For further details on our capabilities, please visit our plastic machining page.
Applications
Typical uses include valve seats, gaskets, washers, shaft bearings, filter housings, shaft seals, slide runners, chemical tank linings, pump and instrument components, and electrical insulation parts.
Key Features
- Operating temperature range: -200°C to +260°C.
- Highly chemically inert, except against elemental alkali metals, chlorine trifluoride, and elemental fluorine at elevated temperatures and pressures.
- Partially electrically conductive and anti-static, with volume/surface resistivity around 10³ Ohms.
- Superior dimensional stability and creep resistance compared to standard PTFE.
- Enhanced dynamic bearing performance.
- Excellent sliding characteristics.
Availability
Also stocked: Carbon Filled PTFE Rod.