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Black 3M 481 sealing tape roll 2 in wide 5 yd long 9.5 mil thick

3M

3M 481 Sealing Tape Black 2 in x 5 yd 9.5 mil 25 oz/in 170°F

SKU CH-HMEZ-Z9DB5

Black polyethylene sealing tape with rubber adhesive holds up to 170 °F and bonds at 25 oz/in

  • TypeCapacitors
  • Strong 25 oz/in adhesion secures seals reliably
  • Withstands heat up to 170 °F for demanding environments
  • 5 mil polyethylene backing resists tears and punctures
  • Rubber adhesive bonds well indoors and outdoors
  • 5-yard roll at 2-inch width covers large areas

3M 481 Sealing Tape Specifications

3M 481 sealing tape is a polyethylene film tape with a rubber adhesive designed for indoor and outdoor sealing tasks. The black tape measures 2 inches wide by 5 yards long with a 9.5 mil thickness. It provides an adhesion to steel of 25 oz/in for reliable bonding on metal surfaces.

Replacing Duct Tape or Cloth Tapes

This tape upgrades from general-purpose duct or cloth tapes when a consistent polyethylene backing and rubber adhesive are required. The jump is worth it for applications needing a uniform 9.5 mil thickness and a defined 25 oz/in adhesion level. It suits jobs where temperature exposure reaches 170°F and a clean black finish is preferred.

Sustained Load Behaviour at High Temperature

Under sustained load the rubber adhesive maintains its bond up to the 170°F maximum performance temperature. The polyethylene film backing resists moisture and environmental exposure during long-term indoor or outdoor use. Adhesion remains stable at the rated 25 oz/in without the short-term drop-off seen in lighter tapes. The construction supports continuous sealing stress at elevated temperatures.

Highlights

  • Strong 25 oz/in adhesion secures seals reliably
  • Withstands heat up to 170 °F for demanding environments
  • 5 mil polyethylene backing resists tears and punctures
  • Rubber adhesive bonds well indoors and outdoors
  • 5-yard roll at 2-inch width covers large areas

Specifications

Brand3M
TypeCapacitors

Questions about this item

What surface width does the 2 in tape cover for sealing?

The 2 in wide polyethylene film backing spans a two-inch gap, and the rubber adhesive delivers 25 oz/in adhesion to steel for a secure indoor or outdoor seal.

How do I apply the 3M 481 tape without trapping air bubbles?

Unroll the 9.5 mil thick tape, press the rubber adhesive side firmly onto the clean surface, and smooth it with a roller or hand to remove trapped air before the bond sets.

When should I replace the tape if used near its 170°F limit?

Inspect the black polyethylene backing regularly; replace the roll once the rubber adhesive loses tack or the film shows cracking after prolonged exposure up to 170°F.

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