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.