TPE Rubber—TPE rubber wrap has a higher dielectric strength than nylon plastic and butyl rubber wrap, so it’s the best choice for electrical insulation.

Nylon—Nylon plastic wrap is ultra thin, so you can wrap it around each individual wire as well as your whole bundle for enhanced protection. Along with water, it resists oils, chemicals, and grease.

Butyl—Butyl rubber wrap seals larger gaps than TPE rubber and nylon plastic wrap, so it’s better for protecting irregular shapes or items with deep grooves. However, it doesn’t withstand temperatures as high.

Dielectric Strength—Dielectric strength is the maximum voltage a material can handle before it starts to breakdown. The higher the dielectric strength of a material, the better it is for preventing electricity, heat, or signal from dissipating from wire and cable.