E-Mail: aavolyn@bellatlantic.net

*The major group of filled Teflon® developed for its mechanical properties is the carbon filled
family.
*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
velocities.
*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:
HYDROGEN AMMONIA
NITROGEN ETHANE
NATURAL GAS PROPANE
ETHYLENE
*If combined with current pressure balanced and pressure relieved ring designs, you can look
forward to very acceptable ring life. This assumes that proper molding techniques are
utilized, including correct blends, molding pressures, and stress relieving cycles.
*If you are experiencing wear problems or developing new engineered ring designs, please
feel free to contact our engineering department.

616 ORANGE ST.

P.O. BOX 1097

MILLVILLE, NJ 08332

Telephone: 856-327-8040

Fax: 856-327-9595

E-Mail: aavolyn@bellatlantic.net