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Roll of copper foil tape on a spool, half-inch wide, metallic copper finish

3M

3M 1181 Copper Foil Tape 18 ft 2.6 mil 600 V 66 dB

SKU CH-7HR7-KPAVX

Conductive copper foil tape, 18 ft roll with acrylic adhesive, rated 600 V and 66 dB shielding from -40 °F to 266 °F

  • ColorCopper
  • Shields signals effectively with 66 dB shielding effectiveness
  • Handles high voltage safely rated at 600 V
  • Operates in extreme cold down to -40 °F
  • Withstands high heat up to 266 °F
  • Thin 2.6 mil copper foil conforms easily

HVAC Copper Foil Tape for Shielding

3M 1181 copper foil tape is a conductive electrical tape built for general-purpose shielding tasks. The 18 ft roll suits technicians and maintenance crews who need reliable EMI protection on cable wraps, enclosures or ductwork. Acrylic adhesive bonds to metal and painted surfaces without special primers.

Thin Profile with Wide Temperature Range

At 2.6 mil thick the tape conforms to irregular contours and fits tight clearances inside cabinets or conduit. Single-sided acrylic adhesive remains tacky from minus 40 degrees F up to 266 degrees F, so it survives freeze-thaw cycles and equipment heat without lifting or leaving residue.

Rated for 600 Volts and 66 dB Shielding

The copper foil carries a 600 V rating, making it suitable for low-voltage control circuits and grounding straps. Shielding effectiveness reaches 66 dB across typical EMI frequencies, attenuating interference on sensor leads and data lines. Continuous roll format lets you cut exact lengths for each job.

Highlights

  • Shields signals effectively with 66 dB shielding effectiveness
  • Handles high voltage safely rated at 600 V
  • Operates in extreme cold down to -40 °F
  • Withstands high heat up to 266 °F
  • Thin 2.6 mil copper foil conforms easily

Specifications

Brand3M
ColorCopper

Questions about this item

What voltage does the 3M 1181 copper foil tape rate for?

The tape carries a 600 V rating for electrical insulation and shielding applications.

What width and length roll is supplied for this copper foil tape?

The roll measures 1/2 inch wide and provides 18 ft of continuous copper foil.

How do I apply the 3M 1181 tape so the acrylic adhesive bonds correctly?

Clean the surface thoroughly, then press the tape firmly at room temperature; the adhesive needs full contact to reach its -40 °F to 266 °F performance range.

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