3M
3M 8979 Duct Tape Slate Blue 2 x 60 yd 12.6 mil
Clean-removal duct tape with rubber adhesive on polyethylene-coated cloth, 60 yd by 1 7/8 in, rated from 40 to 200 °F with 57 oz/in adhesion
- ColorSlate Blue
- Clean removal without residue thanks to rubber adhesive
- Withstands 40 to 200 °F for indoor and outdoor use
- 57 oz/in adhesion to steel gives strong hold
- Polyethylene coated cloth backing resists tearing
- 60 yard roll provides 54.8 metres of continuous tape
What this tape is and who it's for
3M 8979 is a slate-blue duct tape built with a polyethylene-coated cloth backing and rubber adhesive. It comes in a 60-yard roll that is 1 7/8 inches wide and 12.6 mil thick. The tape is designed for indoor and outdoor duct sealing and general repair work where clean removal is needed later.
Temperature and adhesion limits
The tape performs continuously between 40 and 200 degrees Fahrenheit. Adhesion to steel is rated at 57 ounces per inch. Outside this temperature range the bond may weaken or the adhesive may leave residue, so the tape should not be used on surfaces that exceed these limits.
Installation notes and common issues
The roll unrolls smoothly for hand application; press firmly to ensure full contact with the duct surface. The most frequent problem is applying the tape to dirty, oily or wet metal, which prevents the rubber adhesive from gripping. Cold surfaces below the minimum temperature also reduce initial tack and can cause edges to lift.
Highlights
- Clean removal without residue thanks to rubber adhesive
- Withstands 40 to 200 °F for indoor and outdoor use
- 57 oz/in adhesion to steel gives strong hold
- Polyethylene coated cloth backing resists tearing
- 60 yard roll provides 54.8 metres of continuous tape
Specifications
| Brand | 3M |
|---|---|
| Color | Slate Blue |
Questions about this item
Which 3M 8979 size should I pick for a large duct run?
This roll is 1 7/8 in wide and 60 yd long, so one roll covers a long straight run without seams.
What does the 12.6 mil thickness mean when I wrap a joint?
The tape measures 11.5 mil actual thickness, giving a stiffer wrap that resists tearing on metal corners.
How does the rubber adhesive hold up at the 200 °F upper limit?
Adhesion to steel is rated at 57 oz/in and the tape performs continuously from 40 °F up to 200 °F.
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