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 11486 Dynabelter Accu-Grinder Abrasive Belt Tool, Heavy-Duty
Dynabrade 11684 Dynabelter Contact Arm Assembly 4" DIA X 5/8" W., 40 Duro Serrated
3M 08024, Adhesive Sealant 740 UV, Black, 290 mL Cartridge, 7100115542, 12 per case
Standard Abrasives 78523, Ceramic Pro Type 29 Flap Disc, 645129, 4-1/2 in x 5/8-11 80 Y-weight, 7010310620, 10 per case
Dynabrade 64350 26" W x 36" L (660 mm W x 914 mm L) Metal Capture Downdraft Station, 230 V (AC)
Insize ISV-1H6207, RIGID BORESCOPE, 8.23", 6928640323850
Standard Abrasives 78511, Ceramic Pro Type 27 Flap Disc, 645104, 4-1/2 in x 5/8-11 80 Y-weight, 7010331461
Standard Abrasives 42620, A/O Flap Wheel 621405, 1 in x 1 in x 1/4-20 in 60, 7010294994, 10 per case
3M™ 07010, Supplied Air Respirator Hose W-9435-25/07010(AAD), 25 ft, 3/8 in ID, Industrial Interchange Fittings, High Pressure, 7000005374, 1 EA/Case
3M 05516, Polyurethane Glass Adhesive Sealant 590, Black, 310 mL Cartridge, 7100060280, 12/Case
3M 62615, Scotch-Weld Threadlocker TL90, Green, 10 mL Bottle, 7100039234, 10/case
Standard Abrasives 78512, Ceramic Pro Type 27 Flap Disc, 645109, 4-1/2 in x 7/8 40 Y-weight, 7010301276
3M 04297 Scotch-Brite Surface Conditioning Belt, SC-BS, A/O Very Fine, 2 in x 132 in, 7010365859
Norton 66261013403 - 3" X 1/2" Extra Coarse Grade Silicon Carbide Bear-Tex Rapid Strip TR Stripping Disc, 10 Each
Dynabrade 14010 Dynafile Abrasive Belt Tool Versatility Kit
3M 08237, Semi-Rigid Parts Repair - 3, 08237, Black, 200 mL Cartridge, 7010327900
Dynabrade 10690 Filter/Regulator/Lubricator, FRL40, 1/2" NPTAssy.
Standard Abrasives 78525, Ceramic Pro Type 29 Flap Disc, 645134, 4-1/2 in x 7/8 60 Y-weight, 7010331465
3M 22399, Roloc Disc 361F, 50 YF-weight, TR, 2 in, Die R200P, 7000028184
Dynabrade 95821 Dynabrade Air Lube 10W/NR, 4oz Bottle
ACS 3" Diamond Disc, 60 Mesh, W/ Plastic Button
Dynabrade 40320 Dynafile II Abrasive Belt Tool
3M 26103, PPS Series 2.0 Adapter, Type S19, 3/8 Female, 19 Thread BSP, 7100135928
Dynabrade 64404 36" W x 60" L (914 mm W x 1,524 mm L) Metal Capture Downdraft Table, 230 V (AC), Side Exhaust
Dynabrade 11475 Dynabelter Abrasive Belt Tool, Standard Duty
Dynabrade 14000 Dynafile Abrasive Belt Tool
3M 5681, Disc Pad Holder 915, 5 in x 1/8 in x 3/8 in M14-2.0 Internal, 7000028500 
