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Copper foil tape roll, single-sided acrylic adhesive, 3.5 mil thick, 65 dB shielding

3M

3M 1125 Copper Conductive Tape HVAC Control

SKU CH-Q9B2-5N9RF

Copper foil tape with acrylic adhesive shields to 65 dB and operates from -40 to 265 °F at 600 V

  • ColorCopper
  • Conducts reliably across extreme temperatures from -40 °F to 265 °F
  • Shields signals with 65 dB effectiveness using copper foil backing
  • Handles up to 600 V with acrylic adhesive on 3.5 mil tape
  • Ready to apply on a continuous roll with liner included
  • Trusted 3M quality in model 1125 for HVAC control applications

HVAC Control Tape for Shielding

3M 1125 copper conductive tape is an HVAC control product built for EMI shielding and electrical grounding tasks. It uses a copper foil backing with acrylic adhesive on a continuous roll. The tape operates from -40 to 265 degrees F and carries a 600 V rating.

Simple Liner Removal Application

The single-sided adhesive format and included liner make handling straightforward. Users peel the liner and press the foil onto clean surfaces. The 3.5 mil thickness allows conforming to irregular shapes without tearing during installation.

65 dB Shielding Effectiveness Decides Fit

Shielding effectiveness of 65 dB is the specification that determines whether this tape meets your attenuation requirement. The 4-inch width and 6-yard length define the total coverage per roll. Buyers needing higher dB values or different widths must select another product.

Highlights

  • Conducts reliably across extreme temperatures from -40 °F to 265 °F
  • Shields signals with 65 dB effectiveness using copper foil backing
  • Handles up to 600 V with acrylic adhesive on 3.5 mil tape
  • Ready to apply on a continuous roll with liner included
  • Trusted 3M quality in model 1125 for HVAC control applications

Specifications

Brand3M
ColorCopper

Questions about this item

How can I verify the tape is performing correctly after applying it to my HVAC system?

The tape is rated for continuous operation between -40 °F and 265 °F and provides 65 dB shielding effectiveness at 600 V, so consistent thermal and EMI performance within those limits indicates proper function.

What does the roll include and is a separate liner required?

The roll is a continuous 6-yard length of 3.5 mil copper foil with acrylic adhesive on one side and a liner is already included, so nothing extra is needed for standard installation.

Which width should I choose for my ductwork repair?

This product is supplied in a single 4-inch width, so select it when that dimension matches the seam or joint you are sealing.

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