Weather resistant covering for line wires

Previous to the last two years, development of weather resistant covering for line wires lay in the hands of the manufacturer and was centered upon meeting the demand for a cheaper product. This resulted in a decreasing life of the covering. Research described in this article points the way to a greatly improved covering which, although slightly more expensive to produce, can be justified economically by its longer life and higher insulating quality. Specifications for the saturant of such a covering are presented herewith.