Raychem is the leading brand in electrical heat-tracing solutions. In 1969, Raychem Corporation acquired Chemelex. The match proved ideal. Raychem was already a world leader in polymer science technology, with an impressive product portfolio that included high temperature wire for jet aircraft, and heat-shrinkable polymers for electric insulation.

A patented Chemelex technology allowed construction of a cut-to-length heater based on conductive ski wax. In 1971, Raychem's Chemelex Division introduced the world's first self-regulating heat-tracing products. By 1980, the self-regulating heater had become the industry standard worldwide, and Chemelex its leading manufacturer.

Today, the Raychem brand of self-regulating and power-limiting heat-tracing products continue to be recognized as the finest in the world for the Industrial, Commercial, and Residential markets.