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 03647, Scotch-Brite Edger Disc Pad, 7 in x .875 in, 7000133920
3M 29611, 641WY 1/4" X 24", 100 Mesh Diamond Cloth Belt, 7010534832
3M 62602, Scotch-Weld Threadlocker TL22, Purple, 50 mL Bottle, 7100039159, 10/case
3M 76623, Roloc Disc 777F, 50 YF-weight, TR, 1 in, Die R100N, 7000045619
3M 26018, PPS Series 2.0 Adapter, Type S11, 3/8 Male, 18 Thread NPS, 7100135942
Standard Abrasives 840038, Quick Change Surface Conditioning GP Disc, A/O Medium, TSM, Maroon, 3/4 in, QS75KM, 7000121647, 50/case
Dynabrade 51624 .1 hp Straight-Line Pencil Grinder, Central Vacuum, 35,000 RPM, 3mm Collet
3M™ 94275, Versaflo™ Gold Coated Tinted Over-Visor with UV/IR Protection M-967N, 70071696879, 1 EA/Case
3M 41597, Polyurethane Adhesive Sealant 560, Black, 310 mL Cartridge, 7100005901, 12/Case
3M 98514, Premium Matte Cloth (Gaffers) Tape GT2, Black, 48 mm x 50 m, 11 mil, 7010336132
3M 14631, Scotch-Weld Metal Bonder Acrylic Adhesive DP8407NS, Gray, 45 mLDuo-Pak, 7100179482, 12/case
3M 62607, Scotch-Weld Threadlocker TL42, Blue, 250 mL Bottle, 7100039192, 2/case
3M 02690, Plastic Bonding Adhesive 2665B, Black, 30 cc syringe, 7100111531, 24/case
3M 01875, Charge-Collection Solar Tape 3011, 2 mm x 1200 m, 7010312686 
