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Heat Shields & Insulation Shields for Spark Plugs

Enhanced Heat Shields for Better Performance

The inherent thermal resistance of DuPont™ Nomex® makes it ideal for high-temperature automotive applications, including heat shields and other under-the-hood applications.

Sheet structures made with DuPont™ Nomex® fiber are used as heat shields, as well as insulation shields for spark plug leads. Other under-the-hood applications where Nomex® helps provide value include flexible, high-temperature hoses, such as those feeding hot air to inlet manifolds. Inside automobiles, Nomex® fiber helps keep engine bays from overheating, radiator hoses from bursting, and windshield wipers from failing, even in inclement weather conditions.


  • Nomex® Fibers

    DuPont™ Nomex® fibers are heat- and flame-resistant, and are used in protective fabrics, garments, insulation, and other high-performance applications to help provide protection to millions of people and processes worldwide.

  • Nomex® Paper


  • Nomex® brand

    Whenever thermal protection is needed, only one fiber comes to mind — Nomex®. For over 40 years, workers across industries have relied on the inherently flame-resistant properties of Nomex® to help keep them safe from the hazards they face on the job.