Thermal Properties

The thermal loadability of PTFE ranges from -260°C to +300°C (e.g. no brittling in boiling helium at –269°C)
This temperature range is not achieved by any other commercially available plastic material. The permanent service temperatures, however, depend on the respective load and stress factors
In concrete terms this means that PTFE in case of moderate mechanical stress can be used at temperatures ranging between –200°C to +260°C

Physiological Properties

Unfilled PTFE is physiologically neutral
PTFE conforms to the requirements of the U.S. Food & Drug-Administration (FDA) and therefore be used with components coming into contact with foodstuffs
A very positive factor in this context is the material’s resistance to hot vapor which means that PTFE parts are very suitable for sterilization in medical or food applications
Conformity certifications for various pigmented tubes are available

Tubing

Paste-Extruded Tubings Made from the Fluoro-Plastic, PTFE
Thanks to its exceptional chemical, thermal and dielectric properties, PTFE ranks at the top of the list of fluoro-plastic materials. These properties enable manifold problem solutions in the chemical, electrical and medical sectors.
front2

Due to the stable combination of fluorine and carbon atoms and the nearly complete shielding of the carbon chain by the fluorine atoms PTFE has nearly universal chemical resistance. This property is attributable to the material's molecular structure. The straight carbon chain is completely covered with a layer of fluorine atoms. Chemical reactions between PTFE and other substances are limited to a few exceptions: alkali metals in melted or dissolved form attack the polymerizate, causing a brown discoloration. Also, elementary fluorine and chlorinetrifluoride effects PTFE at higher temperatures and pressures. For some years, paste compounds have been used increasingly as well. The most common compounds are PTFE-carbon, PTFE-glass, PTFEbronze and PTFE-graphite. Pure-white material will continue to be used wherever the PTFE's outstanding chemical and thermal resistance and adhesive properties are required. Glass-filled material is preferably used when wear resistance, which is required with industrial applications in particular, should be increased. Carbon and graphite improve the thermal conductivity of the tube in addition to some mechanical properties. By adding bronze as a filler the creep tendency of the base material can be reduced. A filler which has been gaining continuously increasing importance is bismuth-carbonate, which is primarily suitable for medical applications. This enables tubes used in endoscopic surgery to be made visible on respective fluoroscopic monitors during surgical procedures. The aforementioned properties are key factors contributing to the continuously increasing utilization of PTFE tubings in the chemical, electrical and mechanical industries, but also in medical technology. Standard tube dimensions range from 0.3 x 0.8 mm to 24 x 26 mm and above.

Products

Tubing