TEFLON USAGE

The Teflon® trademark was coined by DuPont. The story of Teflon® began in April 6, 1938, at DuPont's Jackson Laboratory in New Jersey. DuPont chemist, Dr. Roy J. Plunkett, was working with gases related to Freon® refrigerants. Upon checking a frozen, compressed sample of tetra-fluoro-ethylene, he and his associates discovered that the sample had polymerized spontaneously into a white, waxy solid to form poly-tetra-fluoro-ethylene (PTFE). http://www.dupont.com/teflon/newsroom/history.html

Following are the advantages of using Teflon® as insulating material over the conventional PVC :

• Wide range of service temperatures ranging from -200 oC to +300o C. Withstands overheating due to transient current load reducing the hazards of flashover in tightly bundled wiring
• Does not propogate or serve as a fuel for fire and is self extinguishing
• Wires and cables are much smaller in size and weight. Consequently, more circuits per conduit are possible
• Teflon® has low dielectric constant and is not altered by heat ageing
• Resists damage from abrasion during conduit pulling or rough handling. Teflon® has not exhibited any changes in it's electrical, mechanical, chemical properties after nearly 30 years of outdoor exposure at Du Pont's test areas in Florida and Michigan
• Not affected by long term exposures to virtually all chemical and corrosive environments including acids, bases, paints, lacquers, fuels etc.