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Teflon PTFE - Carbon-Filled
Carbon-Filled Teflon PTFE was developed for its mechanical properties.
Data on this page is based on 25% carbon-filled PTFE
Different filler percentages will change the properties. (contact us for details)
The two basic materials used in these compounds, by themselves, are very questionable.
Teflon® has good frictional properties including low wear rates and good elasticity. The
carbon filler is brittle and has low wear properties. Both fail at high loads and increased
When both elements are formulated and properly blended together, they become an
extremely good material for use as seals and rings in the reciprocating compressor industry.
The properties increase several hundred times. Wear resistance is changed dramatically
compared to virgin Teflon®. The type and percentage of carbon is critical to material
performance. Carbon filled has a higher percentage of filler than any other Teflon® blend.
Therefore the two materials must be similiar in size to prevent voids in the molded billet. For
optimum wear properties, the filler percentage is also important. Lower percentages are
easier to machine but do not perform as well in service. AVA56 Teflon ® material, is designed
for optimum wear properties in all suitable applications.
The molding cycle is also important to provide proper pysical properties. At higher molding
pressures the material has higher density and more filler is required. Not all carbon filled
Teflon® is of the same quality.
*Tests have shown the material will hold up to 900 fpm and 2000 psi for unlubricated
applications and up to 3500 PSI in lubricated service.
As long as the gas being compressed is relatively clear of solids and liquids, you can
expect favorable performance for this family of filled Teflon® in the following gas service:
NATURAL GAS PROPANE,
Extremely good material for use as seals and rings in the reciprocating compressor industry.
Teflon® is a registered tradename of DuPont