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 87670, High Intensity Prismatic Reflective Sheeting 3930DS White forDigital Printing, 24 in x 50 yd, 7100116165
Dynabrade 95843 Dynabrade Air Lube 10W/NR, 1 Gallon
3M 73553, Mix & Dispense Equipment Nozzle, TS418, 4 in x 1/8 in, 7100207929
3M 26104, PPS Series 2.0 Adapter, Type S20, 1/8 Male, 27 Thread NPSM, 7100135929
3M 29829, Sanding Screen, 80 Grit, 19 in x NH, 7100160252
3M 07333, Impact Resistant Structural Adhesive, 200 mL Cartridge, 7100050351, 3 percase
3M 29842, Sanding Screen, 180 Grit, 16 in x NH, 7100160822
Dynabrade 53533 Cone or Plug Grinder (Triple Extension)
Dynabrade 53270 7" (180 mm) Dia. Right-Angle Disc Sander
Dynabrade 14010 Dynafile Abrasive Belt Tool Versatility Kit
3M High Performance Flatback Tape 2519, Tan, 100 mm x 55 m, 8 Roll/Case, 7100243539
3M 05791, Hookit Pad, 7000028382
Dynabrade 95821 Dynabrade Air Lube 10W/NR, 4oz Bottle
Dynabrade 14000 Dynafile Abrasive Belt Tool
3M 36849, Dirt Trap Protection Material, White, 4 in x 300 ft, 7100133779 
