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.

Dynabrade 51705 .1 hp Straight-Line Pencil Grinder, Rear Exhaust, 50,000 RPM, 3/32" Collet
3M 62611, Scotch-Weld Threadlocker TL62, Red, 250 mL Bottle, 7100039195, 2/case
3M 47201, Polyurethane Sealant 540, Black, 600 mL Sausage Pack, 7100198009, 12/Case
3M 49937, Roloc Disc 361F, 60 YF-weight, TSM, 2 in, Die RS200PM, 7000119016
Dynabrade 14010 Dynafile Abrasive Belt Tool Versatility Kit
3M 13718, Scotch-Brite EXL Unitized Wheel, XL-UW, 2S Fine, 3 in x 3/4 in x 1/4 in, 7000046025
3M 76622, Roloc Disc 777F, 36 YF-weight, TR, 1 in, Die R100N, 7000045618
3M 29611, 641WY 1/4" X 24", 100 Mesh Diamond Cloth Belt, 7010534832
3M 22399, Roloc Disc 361F, 50 YF-weight, TR, 2 in, Die R200P, 7000028184
3M 22393, Roloc Disc 361F, 36 YF-weight, TR, 3 in, Die R300V, 7000045093
3M 76623, Roloc Disc 777F, 50 YF-weight, TR, 1 in, Die R100N, 7000045619
3M 62606, Scotch-Weld Threadlocker TL42, Blue, 50 mL Bottle, 7100039193, 10/case
3M 65033, Scotch-Brite Diamond Wheel, 645DC 6 in x 1/2 in x 1 in, 7010365574, Box of 3
3M 62613, Scotch-Weld Threadlocker TL71, Red, 50 mL Bottle, 7100039231, 10/case
3M 66634, Cloth Belt 341D, 80 X-weight, 6 in x 48 in, Film-lok, Single-flex, 7000118866, 20 per case
Dynabrade 95842 Dynabrade Air Lube 10W/NR, 1 Pint
3M 62617, Scotch-Weld Threadlocker TL90, Green, 250 mL Bottle, 7100039235, 2/case
3M 16614, Accuspray Atomizing Head, Green, 1.3 mm, 7100086806 (4 Nozzles/Kit)
3M 05048, Cloth Belt 384F, 80+ XF-weight, 1 in x 12 in, Fabri-lok, Full-flex, 7100141432, 200 per case
3M 01133, Hookit Red Finishing Film Abrasive Disc 260L, 6 in, Dust Free, P1500, 7010290267, 25 discs per carton
Dynabrade 40320 Dynafile II Abrasive Belt Tool
3M 47195, Polyurethane Construction Sealant 525, Gray, 600 mL Sausage Pack, 7100198003, 12/Case
Standard Abrasives 724277, Buff and Blend Circle Buff GP, A/O Very Fine, 2 in x 2 Ply x 8-32, 7010368699
3M 20931, PSA Cloth Disc 348D, P100 X-weight, 1 in x NH, Die 100N, 7000118915
Dynabrade 51702 .1 hp Straight-Line Pencil Grinder, Rear Exhaust, 60,000 RPM, 3/32" Collet
Dynabrade 51629 .1 hp Straight-Line Pencil Grinder, Central Vacuum, 1/8" Collet
Dynabrade 53533 Cone or Plug Grinder (Triple Extension)
ACS Diamond Cloth Belt, CX1250 3/8" X 24" 75U
3M 22972, Disc Holder Adapter 9, 5/8-11 External M10-1.50 Internal, 7000046095
Dynabrade 14000 Dynafile Abrasive Belt Tool
Dynabrade 64350 26" W x 36" L (660 mm W x 914 mm L) Metal Capture Downdraft Station, 230 V (AC)
3M 14895, Cloth Belt 777F, 80 YF-weight, 1 in x 42 in, Film-lok, Single-flex, 7010299926, 200 per case
3M 71358, 641WY 1/4" X 24", 600 Mesh Diamond Cloth Belt, 7010534894
Dynabrade 13509 Dynastraight Finishing Tool, Rear Exhaust, 6,000 RPM, 5/8" (16 mm) or 1" (25 mm) Dia. Arbor
3M™ 72787, Calibration Kit 529-04-48, Large, 7000052154, 1 EA/Case 
