Nomex® A History of Quality and Reliability - For over 40 years, Nomex® thermal technology has performed in the most demanding electrical applications helping to solidify DuPont’s position as a global leader in UL-recognized Electrical Insulation Systems. Within the family of Nomex® products – primarily papers and pressboards in various forms - there’s a high-quality solution to meet virtually any electrical insulation requirement. When used properly, Nomex® helps extend the life of electrical equipment and reduce premature failures.