SPD cable is Teflon insulated, braid shielded with electron impinging chloropolyethylene elastomer jacket. The Teflon insulated wire can be used in the range of temperature -155∩ to 200∩ This wire provides excellent mechanical and chemical properties. i.e. abrasion resistant, cut- through resistant, low friction, adhesion-resistant, corrosive resistant, and chemical fluid resistant. It is also excellent for the electrical short because of the dielectric of teflon. It is possible to make thin layer of dielectric composed with another materials under the same conditions. Thus the wire designation is more compact. Since the jacket is made by impinging electrons to chloropolyethylen elastomers, it can be used in low temperature -55∩ to high temperature 150∩ The material is a compound of flexible rubber and plastic, which has the characteristic of the flame, fluid, abrasion, and chemical resistances.