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 26109, PPS Series 2.0 Adapter, Type S23, 1/4 Female, 18 Thread NPS, 7100135941
3M 71361, 641WY 1/4" X 24", 1200 Mesh Diamond Cloth Belt, 7010534916
3M™ 53797, Flexible Diamond Belt 6451J, 1/2" Dia x 18" L, M125 Micron, Type G, Pattern B2, 7010509272
3M 76790, Roloc Disc 361F, 60 YF-weight, TS, 2 in, Die RS200P, 7010300088
Air Turbine Tools 310RSV - 6mm Router Hand Tool Series with Brake, 30,000RPM, 33435
Dynabrade 51863 .7 hp Trim Router (Complete), 20,000 RPM, 1/4 Collet
3M 13372, Scotch-Brite Star, 3 in A CRS LS, 7000120967
3M 50199, Finesse-it Hand Sanding Pad, 1-1/4 in, Soft Black Vinyl Face, 7000028401
Standard Abrasives 713159, Aluminum Oxide Handy Roll, P120 J-weight, 1-1/2 in x 50 yd, 7010290409
Dynabrade 95842 Dynabrade Air Lube 10W/NR, 1 Pint
3M 10115, Synthetic Steel Wool Pads, #3 Coarse, 7000051986
3M 33780, 641WY 1/4" X 24", 400 Mesh Diamond Cloth Belt, 7010534915
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
ACS CX1250 Diamond Belt, 1/2" X 24" 30u
3M™ 72016, Remote Alarm & Strobe 529-05-20, Audible, 7000131708, 1 EA/Case
Dynabrade 51860 1.0 hp Trim Router (Complete), 20,000 RPM, 1/4 Collet
3M 11414, Roloc Disc 361F, P120 XF-weight, TR, 1 in, Die R100N, 7000045104
Standard Abrasives 700743, Cartridge RoII Mandrel, 1/8 in x 3/4 in x 1/8 in x 1 in x 2-3/4 in CM-4, 7010368728
Dynabrade 95821 Dynabrade Air Lube 10W/NR, 4oz Bottle
3M 65033, Scotch-Brite Diamond Wheel, 645DC 6 in x 1/2 in x 1 in, 7010365574, Box of 3
3M 19770, Utility Cloth Sheet 314D, 9 in x 11 in P120 J-weight, 7000000358
3M 26130, PPS Series 2.0 Adapter, Type S35, 16 mm Female, 1.5 mm
Thread Stretched, 7100135926 
