PTFE – The Wonder Material!
PTFE is the outstanding high performance engineering fluoropolymer with an incomparable profile of unique properties!
Chemical Resistance: PTFE / TFM™ is almost totally inert chemically and can be used in the most corrosive environments yet will not contaminate the most sensitive medium.
Electrical Resistance: Outstanding electrical properties with low dielectric constant and dielectric loss factor. Does not support tracking or arcing.
Temperature Resistance: A wide range of working temperature cryogenic to about 280°C. No embrittlement in liquid helium. Thermal degradation does not commence until temperatures over 400°C. PTFE / TFM™ does not melt as with other Fluoropolymers therefore provides built-in SAFETY FACTOR.
Flexibility: Outstanding resistance to fatigue and excellent flex properties-one of the best flexural materials known.
Extended Performance: The performance of PTFE can be dramatically altered by the use of fillers-FILLED PTFE materials can be tailored for an exact application by choosing from a wide variety of additives.
The most common filled compounds are:
Carbon: Excellent compression wear and thermal conductivity. Used primarily for oil seals, grooved bearings, or dry piston rings.
Glass: Improved compression wear. Used for dynamic bearings, gaskets, or seals.
Graphite: Good thermal conductivity, low coefficient of permeability and fiction. Use for seals, piston rings, and self-lubricating seals.
Bronze: Excellent compression and wear properties, good thermal conductivity, and low cold flow. Bronze has poor chemical resistance, Use for compression area, bearing pads and high wear application.
Self Lubrication: Frictional coefficients for PTFE are the lowest for all solids and other materials have little or no adhesion to PTFE.