tesa

tesa 58358 EV Battery Electrical Insulation Tape

58358

tesa® 58358 is black PET insulation tape designed for the electrical insulation of electric vehicle (EV) battery cells and other components. It delivers strong adhesion, high dielectric strength, and excellent resistance to mechanical stress, helping ensure reliable protection and long-term performance.

Very strong adhesion to aluminum and steel
Strong backing to resist mechanical stress
Reliable protection against dielectric breakdown

Color: Black

Liner Material: White Paper

Backing/Carrier Material: Polyester Film

Adhesive Type: Modified Acrylic

TotalThickness: 8.66 mil

Overview
Customize
Features
Specifications
Compliance
Resources

Overview

Consult

Specify a finalized design or create a new one from scratch with our experienced converting experts.

Design

Pair our material sampling library with our precision converting capabilities to optimize and validate a prototype.

Produce

Rely on our top-tier suppliers, strict quality controls, and hands-on help to ensure your product's effectiveness throughout its lifecycle.

Customize

Customize This Material

Our wide range of converting capabilities allow us to take this material and transform it into the right width, length, shape or fabricated part to not only achieve ideal integration into your end use, but also optimize how you apply the material in your application. Our converting equipment paired with our expert engineering team will help you create the exact custom solution for your unique requirements.

To learn more about the most common converting services we offer, or to contact our team to start discussing your solution, please utilize the below links:

Tape Slitting

Die-Cutting

Custom Part Fabrication

Prototyping

Custom Length Rolls

Features

Very strong adhesion to aluminum and steel
Strong backing to resist mechanical stress
Reliable protection against dielectric breakdown
Suitable for high-speed automated processing through strong backing and liner
Non-flammable in accordance with FMVSS 302

Specifications

Color	Black
Backing/Carrier Material	Polyester Film
Adhesive Type	Modified Acrylic
Total Thickness	8.66 mil
Liner Material	White Paper
Liner Thickness	2.8 mil
Adhesive Strength	95.9 oz/in
Tensile Strength	119.9 lb/in
Elongation	80%
Dielectric Breakdown	12,000 volts

Compliance

We value the importance of up to date an accurate regulatory information on the products we work with. For the most current Compliance and Regulatory information on your product of interest, please contact our experts for assistance.

Resources

Technical Data Sheet

tesa® 58358 is a single-sided black PET insulation tape featuring a modified acrylic adhesive, designed for the electrical insulation of electric vehicle (EV) battery cells and other components. Engineered to meet the demanding requirements of EV battery systems, it provides excellent adhesion to steel and aluminum surfaces while delivering reliable long-term insulation performance. Its high dielectric strength helps protect against dielectric breakdown up to 12,000 V, enhancing the safety and reliability of battery assemblies. The durable polyester backing offers excellent mechanical resistance to help protect components from stress during manufacturing and operation. The white paper liner and strong backing also support high-speed automated processing. Additionally, tesa® 58358 complies with FMVSS 302 flammability requirements, making it a dependable solution for EV battery insulation applications.

Electrical insulation of battery cells and other components for electric vehicles