3M

3M 1218 Polyimide Tape

3M™ Polyimide Film Tape with Acrylic Adhesive 1218 is a 3.15 mil industrial grade tape product used in high temperature electrical applications that call for a strong, thin, solvent resistant insulating layer or wrap for various electrical components including coils, transformers, capacitors, wire harnesses, and flexible printed circuits.

Exceptional heat and solvent resistance
Acrylic adhesive offers excellent adherence
Withstands temperatures up to 356°F (180°C)

Color: Amber

Backing/Carrier Material: Polyimide Film

Adhesive Type: Acrylic

TotalThickness: 3.15 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

Exceptional heat and solvent resistance
Acrylic adhesive offers excellent adherence
Withstands temperatures up to 356°F (180°C)
UL510 Flame Retarded
Highly conformable
600V rated

Specifications

Color	Amber
Backing/Carrier Material	Polyimide Film
Adhesive Type	Acrylic
Total Thickness	3.15 mil
Backing/Carrier Thickness	1 mil
Adhesive Thickness	2.15 mil
Adhesive Strength	14 oz/in
Tensile Strength	20 lb/in
Elongation	50%
Dielectric Breakdown	5,500 volts
Insulation Resistance	1 x 10¹² ohms
Flame Retardant	Yes
Maximum Temperature Performance	356°F

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

3M™ Electrical Tape 1218 is a high-performance, polyimide film-backed insulating tape designed for high-temperature electrical applications.

Ideal for wrapping capacitors, coils, and wire harnesses, this flame-retardant electric tape offers outstanding thermal stability and solvent resistance.

With a 600V rating, it delivers reliable electrical insulation and maintains its integrity in environments up to 356°F (180°C).

Wrapping coils, transformers, capacitors and wire harnesses
Cover layer material for many types of flexible printed circuits

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