The Process for Adding Equivalent Insulation Materials to UL Equipment


The purpose of this technical white paper is to present the process used by The Gund Company to assist our customers in adding equivalent insulation material to their UL-recognized electrical and electronic equipment. Many manufacturers originally tested their manufactured product to UL, ANSI, or IEEE standards. Those standards often refer to UL Standard 746C – Polymeric Materials: Use in Electrical Equipment Evaluations and or UL 1446 – Systems of Insulating Materials.

Unfortunately, many older equipment designs and conventions specify insulation materials that no longer represent the most advanced material technology available to the market today. In fact, many companies have their UL End Product Section General or their material specification pages filled with materials that are no longer available or manufactured. As a result, many companies have limited themselves to one or two material tops despite having a dozen or more materials listed in the Section General.

Our technical white paper outlines a process for adding equivalent substitution materials to a UL Section General or their approved materials list for their manufactured product.

Click here to read the full white paper that outlines the process for adding equivalent insulation material to UL-recognized electrical equipment.


Request An Onsite Material Evaluation

Please complete the form below, and we will be in contact with you to discuss your request!

Please wait...

The Gund Company is a vertically integrated manufacturer and fabricator of engineered material solutions. Since 1951, we have listened to our customers and learned about their industries’ demanding operating environments. We are AS9100D Certified and ITAR Compliant. Our custom fabricated parts are manufactured according to ISO 9001:2015 certified quality systems.

We understand the challenges of material selection and the demanding operating environment of your application. Our Application Engineering Team takes a consultative approach to understand your requirements. By relying on our material specialists, our customers gain valuable insight into improving component designs to increase efficiency and functionality while reducing cost. In addition to helping with material selection, we challenge ourselves to optimize production for material yield or fabrication efficiency. As a lean enterprise, we focus on continuous improvement and finding the most cost-effective, efficient solutions for our customers.

Please contact us today if we can help answer material property questions or provide an application-specific quote. Thank you for the opportunity to earn your business.

Adding Equivalent Insulation Materials to UL Equipment