A Tape with Versatility
Originally developed for heating, ventilation and air conditioning (HVAC) applications, duct tape is used today in a variety of maintenance, repair and construction settings. 3M™ Heavy Duty Duct Tape 3939 is an excellent choice for general indoor application in MRO and construction. The tape was tested for flame spread using test method UL723, ASTM E84 and can be used at temperatures as high as 200°F for up to 30 minutes. The sturdy cloth-reinforced tape can be torn from the roll by hand and sticks instantly, providing a wide range of convenient solutions. This tape has a classic silver-colored backing.
Recommended Applications
- Patching
- Bundling
- Reinforcing
- Tabbing
- Taping / splicing insulation
- Capping pipe
- Securing conduit ends
- Marking
- Labeling
- Temporary repair
- Hanging poly (polyethylene drapes)
- Protecting against light sandblast overspray
Built to Stick
3M’s family of rugged cloth and duct tapes adheres to most surfaces for applications ranging from bundling to moisture proofing, sealing to splicing, reinforcing to hanging poly drapes. Available in a variety of colors and strengths, they’re known best for their hand tearability, high tensile strength and conformability.

3M™ 72787, Calibration Kit 529-04-48, Large, 7000052154, 1 EA/Case
3M™ 72122, Portable Compressed Air Filter and Regulator Panel 256-02-01, 100 cfm, 8 outlets, with Carbon Monoxide Monitor, 7000052147, 1 EA/Case
Dynabrade 95842 Dynabrade Air Lube 10W/NR, 1 Pint
3M 08275, Rigid Parts Repair, 08275, Blue, 400 mL Cartridge, 7000119864
3M 86892, Cubitron II Roloc Fibre Disc 987C, TR, 3 in, Trial Pack, 7100050294
3M 40002, E-A-R UltraFit Earplugs 340-4003, Uncorded, Poly Bag, 400 Pair/Case, 7000002321
3M 14537 Scotch-Brite Surface Conditioning Low Stretch Belt, SC-BL, A/O Medium, 37 in x 60 in, 7100117782
3M 50754, Roloc Fibre Disc 501C, 80, TSM, 3 in, Die RS300VM, 7010294443
3M 20206, Hookit Clean Sanding Back Up Pad, 5 in x 1/2 in 5/16-24 External 31 Holes, 7100009656
3M 77558, Cubitron II Hookit Cloth Disc 947A, 77558, 40+ to 120+, 6 in x NH, Die 600Z, 7100232737
3M 26139, PPS Series 2.0 Adapter, Type S43, 1/4 Male, 19 Thread BSP, 7100135337
3M 86745, Diamond Disc, 2" Roloc, 674W, 120 Mesh, TR, 7100022116, Box of 10
3M 95323, Venture Tape Non-Adhesive ASJ Facing 1541, White, 35 1/2 in x 600 ft, 7100043796
3M 21543, Scotch-Brite Roloc Clean and Strip XT Pro Extra Cut Disc, TR, 2 in x NH, A XCS, 7100179815, 60/box
3M 71358, 641WY 1/4" X 24", 600 Mesh Diamond Cloth Belt, 7010534894 
