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™ 37018, Supplied Air Respirator Vortex Cooling Assembly V-100/37018(AAD), 70070799013, 1 EA/Case
3M 54143, Particulate Respirator 8233, N100, 7000002028, 20 ea/Case
3M™ 07012, Supplied Air Hose W-9435-100/07012(AAD), 100 ft, 3/8 in ID, Industrial Interchange Fittings, High Pressure, 7000005375, 1 EA/Case
3M 33780, 641WY 1/4" X 24", 400 Mesh Diamond Cloth Belt, 7010534915
3M 17397, VFlex Particulate Respirator 9105, N95, 7000002390, 400 EA/Case
3M 20908, PSA Cloth Disc 348D, P100 X-weight, 2 in x NH, Die 200P, 7000118874
Dynabrade 22092 2-3/4" x 17" Hand Sanding Block
3M™ 07011, Supplied Air Respirator Hose W-9435-50/07011(AAD), 7000005373, 1 EA/Case
Standard Abrasives 32953, PSA A/O Disc, 711880, 2 in x NH, 60, 7010310798
ACS CX1250 Diamond Belts, 1/2" X 24" 45u
3M 33349, 641WY 1/4" X 24", 220 Mesh Diamond Cloth Belt, 7010534919
3M 34786, 663FC, 3/4" X 90", 70u, Diamond Trizact Belts 7100063667
3M 65033, Scotch-Brite Diamond Wheel, 645DC 6 in x 1/2 in x 1 in, 7010365574, Box of 3
3M 71358, 641WY 1/4" X 24", 600 Mesh Diamond Cloth Belt, 7010534894
3M 76750, Roloc Disc 777F, 60 YF-weight, TS, 2 in, Die RS200P, 7010299188
3M 14559, Roloc Disc 361F, P150 XF-weight, TR, 2 in, Die R200P, 7000119021
Dynabrade 01266 Bearing
Dynabrade 95893 Set Screw
Dynabrade 59134 Air Motor Cylinder Assembly
Dynabrade 52139 Air Motor Cylinder Assembly
Dynabrade 95843 Dynabrade Air Lube 10W/NR, 1 Gallon
Dynabrade 90601 7" W x 10-11/16" L 180 Grit A/O DynaCut Belt, 10/pack
Dynabrade 57119 3-1/2" Central Vacuum Conversion Kit
Dynabrade 96247 Repair Collar-1-3/16" Bore
Dynabrade 96367 Ball Peen Hammer
Dynabrade 40326 Dynafile II Abrasive Belt Tool for 20-1/2" Belts
Dynabrade 92013 1" Dia. x 1" W, 60 Grit, Z/A DynaCut Band, 10/pack
Dynabrade 95962 Male Disconnect
Dynabrade 90267 3-1/2" W x 15-1/2" L 40 Grit A/Z DynaCut Belt, 10/pack
Dynabrade 95630 Retaining Ring
Dynabrade 94773 1/2" W x 72" L 60 Grit A/Z DynaCut Belt, 10/pack
Dynabrade 51307 .5 hp Straight-Line Die Grinder, Rear Exhaust, 24,000 RPM, 1/4" Collet
Dynabrade 78662 1/2" Dia. x 1" W x 1/8" Center Hole, Tapered Cartridge Rolls, A/O, 120 Grit, 100/pack
Dynabrade 52242 .7 hp 7 Degree Offset Die Grinder, Front Exhaust, Long Shank, 20,000 RPM, 1/4" Collet
Dynabrade 53631 Flange
Dynabrade 81035 2" W x 60" L 120 Grit A/O DynaCut Belt, 10/pack
Dynabrade 96230 Arbor Press Ram
Dynabrade 92028 2" Dia. x 80 Grit Ceramic DynaCut Locking-Type Disc, 2 Ply Cloth, 25/pack
Dynabrade 57737 Overskirt Shroud for Orbital Sander
Dynabrade 53606 Spindle
Dynabrade 53270 7" (180 mm) Dia. Right-Angle Disc Sander
Dynabrade 78632 3/8" Dia. x 1" W x 1/8" Center Hole, Z/A, 36 Grit, 100/pack
Dynabrade 60202 - 15,000 lb. Jack with No Pad
Dynabrade 82442 6" Dia. x 60 Grit A/O Hook Non-Vacuum Film-Backed DynaCut Disc, 100/Box
Dynabrade 93662 5" Dia. x 3/4" Center Hole, 40/50 Grit Gulleted/Slotted Diamond Cut-Off Wheel
Dynabrade 52720 Cone or Plug 6" (152 mm) Extension Wheel Grinder, 15,000 RPM, 3/8"-24 Male Thread Spindle
Dynabrade 52257 .7 hp Straight-Line Die Grinder, Front Exhaust, 18,000 RPM, 1/4" Collet
Dynabrade 82590 2" W x 72" L 40 Grit Ceramic DynaCut Belt, 10/pack
Dynabrade 52851 Extension Pencil Grinder, Rear Exhaust, 60,000 RPM, 1/8" Collet
Dynabrade 78071 2" W x 30" L Very Fine NWN DynaBrite Belt, 10/pack
Dynabrade 51740 .1 hp Straight-Line Pencil Grinder, Rear Exhaust, 60,000 RPM, 1/8" Collet, with Mount Stem
Dynabrade 78417 6" Dia., Coarse, Hook and Loop, DynaBrite NWN Surface Conditioning Disc, 25/pack
Dynabrade 78554 2" Dia. 2-Set, 8-32 Female Center Thread, 80 Grit, Dynacut A/O Overlap Slotted Disc, 100/pack 
