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 95843 Dynabrade Air Lube 10W/NR, 1 Gallon
Dynabrade 51926 Vane Set (4pk)
3M 17550, Repulpable Double Coated Splicing Tape 9038B, Blue, 36 mm x 55 m, 3mil, 24 rolls per case, 7100027988
3M 94242, Versaflo Powered Air Purifying Respirator Unit TR-802N/94242(AAD), Intrinsically Safe , 7100150821, 1 EA/Case
3M 01326, PSA Cloth Disc 348D, P240 X-weight, 3 in x NH, Die 300V, 7000045069
Dynabrade 07107 Vane Set (5pk)
Dynabrade 10690 Filter/Regulator/Lubricator, FRL40, 1/2" NPTAssy.
Dynabrade 57113 Rotor/Vane Set
Dynabrade 14000 Dynafile Abrasive Belt Tool
Dynabrade 60201 - 9,000 lb. Jack with No Pad
Dynabrade 53270 7" (180 mm) Dia. Right-Angle Disc Sander
3M 52793, Mold Remediation Respirator Kit 69097, Large, 7010316002, 2 Kits EA/Case
Dynabrade 54705 Rotor/Vane Set
Dynabrade 07109 Vane Set (5pk)
Dynabrade 52474 Vane Set (4pk)
Dynabrade 11476 Dynabelter Abrasive Belt Tool, Heavy-Duty
Dynabrade 95544 Gear Grease, 2.5oz. Tube
3M 02960, Scotch-Brite Cut and Polish Wheel, CP-WL, 5A Fine, 6 in x 1 in x 1 in, 7100009186, Box of 3
ACS CX1250 Diamond Belt, 1/2" X 24" 250u 
