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 11137, Roloc Disc 361F, 50 YF-weight, TR, 1-1/2 in, Die R150S, 7000045094
Dynabrade 51630 .1 hp Straight-Line Extension Pencil Grinder, Central Vacuum, 1/8" Collet
3M 97956, Super 77 CA Multipurpose Spray Adhesive, Low VOC <25%, Clear, 24 fl oz Can, 7100014109, 12/Case
3M 71361, 641WY 1/4" X 24", 1200 Mesh Diamond Cloth Belt, 7010534916
Dynabrade 92079 3" Dia. x 220 Grit A/O Non-Vacuum Hook-Face Filmbac DynaCut Disc, 50/Pack
3M 14316, Marine Adhesive Sealant 4000 UV, Black, 295 mL Cartridge, 7010367955, 12/Case
3M 35083, EMI Copper Foil Shielding Tape 1181, 1/4 in x 18 yd (6,35 mm x 16,5 m), 7000132168
Dynabrade 64350 26" W x 36" L (660 mm W x 914 mm L) Metal Capture Downdraft Station, 230 V (AC)
Standard Abrasives 725001, Buff and Blend Cross Buff GP, A/O Medium, 1-1/2 in x 1/2 in x 3 Ply x 8-32, 7010330368
Dynabrade 51750 .1 hp Straight-Line Extension Pencil Grinder, Rear Exhaust, 60,000 RPM, 1/8" Collet
Dynabrade 95843 Dynabrade Air Lube 10W/NR, 1 Gallon
3M 52754, Inhalation Valve 7582, Replacement Part, 7000002158, 10 EA/Bag
Dynabrade 10690 Filter/Regulator/Lubricator, FRL40, 1/2" NPTAssy.
3M 29836, Sanding Screen, 60 Grit, 18 in x NH, 7100160820
3M 86433, Scotch-Weld Multi-Material Composite Urethane Adhesive DP6330NS,Green, 400 mL Duo-Pak, 7100109827, 6 Each/Case
Dynabrade 95848 Dynabrade Gear Oil
Insize 7341-13S, PIN GAGE HANDLE (with 1pc handle and 4 pairs of collecting bushes), .704-.760", 6928640360718
3M 22408, Roloc Disc 361F, P100 YF-weight, TR, 1-1/2 in, Die R150S, 7000045101
3M 62606, Scotch-Weld Threadlocker TL42, Blue, 50 mL Bottle, 7100039193, 10/case
Dynabrade 51731 .1 hp Straight-Line Pencil Grinder, 60,000 RPM, 1/8" Collet
Dynabrade 31920 - 1-1/4" (32 mm) Static Conductive Hose, Black
ACS Diamond Cloth Belt, CX1250 1/4" X 24" 75U
Standard Abrasives 725011, Buff and Blend Cross Buff HP, A/O VFN, 3/4 in x 3/8 in x 2 Ply x 8-32, 7000047134
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 
