Polyethylene is the compound most widely used in coaxial and low capacitance cables due to its excellent electrical properties. All of the polyethylenes are excellent dielectrics. Outstanding electrical properties include high insulation resistance, high dielectric strength, low dielectric constant, and low dielectric loss at all frequencies, excellent resistance to cold flow, and good abrasion resistance. Although polyethylene is flammable, additives can be used to make the polyethylene flame retardant at the expense of the dielectric constant and power loss characteristics. Usable temperature ranges from a low of -65°C to as high as 80°C. Polyethylene (in high, medium and low densities) is generally very hard and stiff, and these properties typically do not change over the usable temperature range. Polyethylene can be used by for primary insulation as will as the cable jacketing compound so is widely used for insulation on telephone signal and control cables, high frequency electronic cables, high and low voltage power cables.
Temperature Rating 80° C / 176° F