We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Copper foil tape roll, half-inch wide, eighteen feet long, shiny metallic finish

3M

3M 1125 Copper Foil Tape 18 ft HVAC Control

SKU CH-DC28-5N873

Conductive copper foil tape, 18 ft roll, 3.5 mil thick, acrylic adhesive, operates from -40 to 265 °F, 600 V rating, 65 dB shielding

  • ColorCopper
  • Conductive copper foil shields cables with 65 dB effectiveness
  • Acrylic adhesive bonds from -40 °F to 265 °F
  • 5 mil thickness handles 600 V electrical loads
  • 18 ft roll supplies ample length for HVAC tasks
  • 3M 1125 model ensures reliable EMI shielding performance

Copper foil tape for EMI shielding

3M 1125 is a single-sided copper foil tape with acrylic adhesive supplied as a continuous roll. It provides 65 dB shielding effectiveness and a 600 V voltage rating for electrical and EMI shielding tasks. The tape measures 18 ft in length and 3.5 mil thick for conformable application.

Replaces basic foil or fabric tapes

Upgrade when a job requires consistent conductivity across the full length and reliable adhesion from -40 Degrees F to 265 Degrees F. The acrylic adhesive maintains bond strength through thermal cycling where standard tapes may lift or lose conductivity over time.

Fits tight harnesses and panel seams

The half-inch width and thin profile allow the tape to wrap around cables, seal enclosure seams and shield connectors without adding bulk. Its conformable copper foil follows irregular surfaces and frees up space that heavier shielding braids or rigid cans would occupy.

Highlights

  • Conductive copper foil shields cables with 65 dB effectiveness
  • Acrylic adhesive bonds from -40 °F to 265 °F
  • 5 mil thickness handles 600 V electrical loads
  • 18 ft roll supplies ample length for HVAC tasks
  • 3M 1125 model ensures reliable EMI shielding performance

Specifications

Brand3M
ColorCopper

Questions about this item

What surface preparation does the 1/2 in copper foil tape need for the acrylic adhesive to bond?

Clean the surface so it is dry and free of oil, dust or old adhesive residue; the acrylic adhesive on the 3.5 mil foil bonds best to a smooth, contaminant-free substrate.

How do you apply the 18 ft roll without trapping air bubbles under the single-sided adhesive?

Unroll a short section, press the tape down firmly from the centre outward with a plastic squeegee or roller, then continue in overlapping passes to keep the 65 dB shielding layer continuous.

When should the copper foil tape be replaced in an HVAC duct that cycles between -40 °F and 265 °F?

Inspect the tape annually; replace it if the copper surface shows oxidation, the acrylic adhesive lifts at the edges, or the shielding effectiveness drops below the rated 65 dB.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.