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PTFE Filled Graphite
Graphite Filled PTFE
The percentages used vary between 5 and 15%. Graphite lowers the coefficient of friction and is, therefore, often added to other types of filled PTFE for improving this property. It improves the deformation under load, strength and, to a minor degree, the wear properties.
Graphite filled PTFE has exceptional chemical resistance and is compatible with most hydraulic fluids. Outstanding performance when used for hydraulic/pneumatic compression type rod and piston seals, bearing bands and rotary application.
Features and Benefits
Advantages of Graphite-Filled PTFE:
- Low coefficient of friction compared to other filled PTFE materials.
- Higher flexural modulus and surface hardness than unmodified PTFE.
Disadvantages of Graphite-Filled PTFE:
- Lower notched impact strength, tensile strength, elongation at break and electrical characteristics compared with unmodified PTFE.
- Tendency of graphite to leach out.