3M SCOTCH45BK-19X20 Polyester Film Electrical Tape Black 20 m x 19 mm

Electrical contractors and maintenance technicians rely on 3M SCOTCH45BK-19X20 polyester film tape for insulating and protecting electrical connections in motors, transformers, and coil windings. This black tape provides reliable electrical insulation and mechanical protection in demanding applications.

Key specifications

• Tape type: Polyester Film Electrical Tape
• Backing material: Polyester Film
• Adhesive type: Acrylic
• Colour: Black
• Tape width: 19 mm
• Tape length: 20 m
• Total thickness: 0.06 mm
• Adhesion to steel: 3.5 N/10 mm
• Tensile strength: 50 N/10 mm
• Elongation at break: 100%
• Dielectric strength: 5.5 kV
• Temperature rating: 130 °C
• Operating temperature range: -40 °C to 130 °C
• Insulation class: Class B
• UV resistance: Good
• Solvent resistance: Good

Why choose it

This tape combines high dielectric strength with excellent resistance to heat, cold, UV, and solvents. It maintains its insulating properties across a wide temperature range, making it suitable for both indoor and outdoor electrical applications. The acrylic adhesive provides strong adhesion to steel and other surfaces.

Ideal use cases

• Electrical insulation of coils and transformers
• Holding and bundling wires
• Coil wrapping
• Masking for powder coating or plating
• Protective covering for printed circuit boards

Good to know

Each roll is 20 m long and 19 mm wide. The tape is RoHS compliant. For best results, apply to clean, dry surfaces at room temperature.