25% Carbon Filled PTFE

We can make 10%, 15%, 20%, and 25% carbon-filled PTFE products. They can be in tube, rod, and sheet types. The carbon can be carbon powder or fiber.

Welcome to Learn 25% Carbon Filled PTFE

Compared to virgin PTFE, 25% carbon filled PTFE sheets, tubes, and rods have a lower coefficient of friction and a higher thermal conductivity. They also have excellent mechanical and wear properties, retain excellent frictional properties, and are an excellent choice for seals and rings in dynamic and high-pressure applications.

Advantages

PTFE on its own has excellent frictional properties, elasticity, and wear resistance but relatively poor mechanical strength and tends to fail in high PV applications. Carbon in itself is a brittle material with poor wear properties and mechanical strength.

Nevertheless, 25% carbon filled PTFE materials offer excellent mechanical and wear properties, provide good thermal conductivity, have low permeability, and are also electrically conductive. They also have a long wear life and excellent extrusion resistance.

Applications

25% carbon filled PTFE sheets, rods, and tubes can be machined into many parts. These parts include pump housings, valve seats, gaskets, roller coverings, shaft bearings, filter housings, etching plates, shaft seals, and slide runners. They find application in chemical engineering, machine parts, transport and conveyor technology, pump and instrument construction, the electrical industry, electronics, laser technology, fume purification, pure water production, cryogenics, filter technology, food, and medical technology.

Typical Physical Properties of 25% Carbon Filled PTFE

PropertiesTest MethodsUnitValue
DensityASTM D792g/cm32.25
Hardness Shore DASTM D2240Sh.D65
Tensile strengthASTM D638mpa16
Elongation at break 23°CASTM D4894%150
Coefficient of dynamic frictionASTM D1894-0.03
Dielectric strengthASTM D149Kv/mm-
Max water absorptionASTM D570%0
Working temperature-°C-220 to 260