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.

ACS Diamond Cloth Belt, CX1250 1/4" X 24" 75U
Dynabrade 64350 26" W x 36" L (660 mm W x 914 mm L) Metal Capture Downdraft Station, 230 V (AC)
Standard Abrasives 843932, Quick Change Surface Conditioning FE Disc, A/O Medium, TSM, Maroon, 7 in x 5/8"-11, 7010330326, 10/case
Dynabrade 51629 .1 hp Straight-Line Pencil Grinder, Central Vacuum, 1/8" Collet
3M 71346, 675L, 1" X 120", 125u, Diamond Microfinishing Film Belts, 7010534823
3M 11418, Roloc Disc 361F, P240 XF-weight, TR, 3 in, Die R300V, 7000045106
3M 71358, 641WY 1/4" X 24", 600 Mesh Diamond Cloth Belt, 7010534894
3M 05049, Cloth Belt 384F, 80+ XF-weight, 1 in x 30 in, Fabri-lok, Full-flex, 7100141431, 200 per case
Dynabrade 51812 .1 hp Straight-Line Pencil Grinder, Rear Exhaust, 1000,000 RPM, 3/32" Collet
3M™ 94275, Versaflo™ Gold Coated Tinted Over-Visor with UV/IR Protection M-967N, 70071696879, 1 EA/Case
Dynabrade 60052 .1 hp Straight-Line Quick-Change Pencil Grinder, Rear Exhaust, 35,000 RPM, 3/32" Collet
3M 77558, Cubitron II Hookit Cloth Disc 947A, 77558, 40+ to 120+, 6 in x NH, Die 600Z, 7100232737
Dynabrade 55500 .1hp Pencil Grinder, Twin Turbine, 100,000 RPM, Nickel-Plated Aluminum Housing, 1/8" Collet
3M 87449 Silver Depressed Center Grinding Wheel, T27 Quick Change, 9 in x 1/4 in x 5/8-11 Center Hub Thread, 7010409732, 20 per case
Dynabrade 51630 .1 hp Straight-Line Extension Pencil Grinder, Central Vacuum, 1/8" Collet
3M 20912, PSA Cloth Disc 348D, 40 X-weight, 2 in x NH, Die 200P, 7000118920
Dynabrade 53270 7" (180 mm) Dia. Right-Angle Disc Sander
3M 62606, Scotch-Weld Threadlocker TL42, Blue, 50 mL Bottle, 7100039193, 10/case
3M 29833, Sanding Screen, 120 Grit, 18 in x NH, 7100160843
Dynabrade 10690 Filter/Regulator/Lubricator, FRL40, 1/2" NPTAssy.
3M 29611, 641WY 1/4" X 24", 100 Mesh Diamond Cloth Belt, 7010534832
Dynabrade 51740 .1 hp Straight-Line Pencil Grinder, Rear Exhaust, 60,000 RPM, 1/8" Collet, with Mount Stem
Dynabrade 51756 .1 hp Straight-Line Extension Pencil Grinder, Rear Exhaust, 35,000 RPM, 1/8" Collet
ACS CX1250 Diamond Belt, 1/2" X 24" 74u
Dynabrade 11684 Dynabelter Contact Arm Assembly 4" DIA X 5/8" W., 40 Duro Serrated
3M 08029, Marine Grade Silicone Sealant, Clear, 304 mL Cartridge, 7000120477, 12/Case
3M 26583, Accuspray Refill Pack for PPS Series 2.0, Green, 1.3 mm, 7100152953
Dynabrade 51623 .1 hp Straight-Line Extension Pencil Grinder, Central Vacuum, 1/8" Collet
Dynabrade 60051 .1 hp Straight-Line Quick-Change Pencil Grinder, Rear Exhaust, 60,000 RPM, 1/8" Collet
3M™ 72013, Adapter 529-04-50, 110-120 VAC, 7000131705, 1 EA/Case
3M 58320, Scotch-Weld PUR Applicator Nozzle Shroud, 7000148288
3M 33349, 641WY 1/4" X 24", 220 Mesh Diamond Cloth Belt, 7010534919
3M 72000, Breathe Easy High Efficiency P3 Particulate Cartridge 450-00-01R12, 7000131700, 12 EA/Case
3M™ 07011, Supplied Air Respirator Hose W-9435-50/07011(AAD), 7000005373, 1 EA/Case
3M 76783, Cubitron II Hookit Cloth Disc 784F, 120+ XF-weight, 5 in x NH, Die 500X, 7100222757
Air Turbine Tools 310RSV - 6mm Router Hand Tool Series with Brake, 40,000RPM, 33445
3M 14593, Scotch-Brite Cut and Polish Disc, 3" x 1-1/4" x 1/4" A Medium, D5, 7000045941, Box of 10
3M™ 72122, Portable Compressed Air Filter and Regulator Panel 256-02-01, 100 cfm, 8 outlets, with Carbon Monoxide Monitor, 7000052147, 1 EA/Case
3M 81356, Venture Tape White Aluminum Foil Tape 1558HT, 72 mm a 45.7 m, 5.4 mil, 7010335933 
