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 77559, Cubitron II Hookit Cloth Disc 784F, 77559, 36+ to 120+, 5 in x NH, Die 500X, 7100232738
Dynabrade 15420 Dynafile III Abrasive Belt Tool
Dynabrade 61420 Raptor Vac Electric Portable Vacuum System
Dynabrade 95544 Gear Grease, 2.5oz. Tube
Dynabrade 14000 Dynafile Abrasive Belt Tool
Dynabrade 14010 Dynafile Abrasive Belt Tool Versatility Kit
3M 22397, Roloc Disc 361F, 60 YF-weight, TR, 1-1/2 in x NH, 7000045097
Dynabrade 53533 Cone or Plug Grinder (Triple Extension)
3M 82239, Scotch-Weld Epoxy Adhesive 420, Off-White, Part A, 5 Gallon Drum (Pail), 7100001144
3M 52684, Motor and Housing Assembly AS-115 , Ultra, 7000126510, 1 EA/Case
Dynabrade 11684 Dynabelter Contact Arm Assembly 4" DIA X 5/8" W., 40 Duro Serrated
Norton 66254433510 - 2" X 1/4" Medium Grade Aluminum Oxide Vortex Rapid Blend Blue Non-Woven Unified Wheel, 60 Each
3M 33780, 641WY 1/4" X 24", 400 Mesh Diamond Cloth Belt, 7010534915
ACS Diamond Cloth Belt, CX1250 1/2" X 72" 125U
3M 22404, Roloc Disc 361F, 80 YF-weight, TR, 3 in, Die R300V, 7000045100
Dynabrade 11476 Dynabelter Abrasive Belt Tool, Heavy-Duty
3M 01326, PSA Cloth Disc 348D, P240 X-weight, 3 in x NH, Die 300V, 7000045069
3M 17397, VFlex Particulate Respirator 9105, N95, 7000002390, 400 EA/Case
3M 29611, 641WY 1/4" X 24", 100 Mesh Diamond Cloth Belt, 7010534832 
