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 37341, Versaflo Powered Air Purifying Respirator PAPR Assembly TR-616N, HC Battery, BT-30 Breathing Tube, HD Belt, 7100035759, 1 EA/Case
Dynabrade 14010 Dynafile Abrasive Belt Tool Versatility Kit
3M 11412, Roloc Disc 361F, 36 YF-weight, TR, 1 in, Die R100N, 7000045092
Air Turbine Tools 2590SVR - 1/4" Angle Hand Tool Series (Long Version, Rear Exhaust), 40,000RPM, 35840
Dynabrade 95848 Dynabrade Gear Oil
3M 97421, Aluminum Foil Tape 3380, Silver, 72 mm x 45 m, 3.25 mil, 7010375681
3M 16159, PTFE Glass Cloth Tape 5453, Brown, 3/4 in x 36 yd, 8.2 mil, 7000050132
Dynabrade 11475 Dynabelter Abrasive Belt Tool, Standard Duty
3M™ 37018, Supplied Air Respirator Vortex Cooling Assembly V-100/37018(AAD), 70070799013, 1 EA/Case
Standard Abrasives 880515, Buff and Blend GP Wheel, 3 in x 2 Ply x 1/4 in A VFN, 7100095203
3M 31452, Sandblast Stencil Products Premium 519YP2T, Tan, 30 in x 10 yd, 48mil, 1 roll per case, Tractor Feed, 7010312783
Dynabrade 15420 Dynafile III Abrasive Belt Tool
3M 20365, Scotch-Weld Epoxy Adhesive 2216, Gray, Part A, 5 Gallon Drum (Pail), 7000046361
3M 33780, 641WY 1/4" X 24", 400 Mesh Diamond Cloth Belt, 7010534915
3M 47408, 663FC 1" X 30", 70u Diamond Trizact Belts, 7010509031
3M 36856, Dirt Trap Clear Film 18 in x 100 ft, 7000028295
3M 14725, Foam and Fabric Spray Adhesive 24, Orange, 16 fl oz Can (Net Wt 13.8 oz), 7100179450, 12/Case
3M 53038, 663FC, 3/8" X 90", 20u, Diamond Trizact Belt 7100205972
3M 07148, Dual Airline Back-Mounted Breathing Tube SA-2500/07148(AAD), 7000002006, 1 EA/Case
3M 71358, 641WY 1/4" X 24", 600 Mesh Diamond Cloth Belt, 7010534894
3M 20910, PSA Cloth Disc 348D, 60 X-weight, 2 in x NH, Die 200P, 7000118872
3M 33446, Cubitron II File Belt, 80+, 1/2 in x 18 in (12.7 mm x 457.2 mm), 7100033186, 10 belts per carton, 5 cartons per case 
