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 54787 4" (102 mm) Dia. Right Angle Type 27 Depressed Center Wheel Grinder, Steel Housing, .7 HP, 12,000 RPM, 3/8"-24 Spindle
Dynabrade 93662 5" Dia. x 3/4" Center Hole, 40/50 Grit Gulleted/Slotted Diamond Cut-Off Wheel
Dynabrade 90623 1/2" W x 7" L 60 Grit, A/O, Small DynaRoll, 5/pack
Dynabrade 52755 Vac Shroud- Mini Angle Head Drill
Dynabrade 53695 Planetary Retainer
Dynabrade 92031 3" Dia. x 60 Grit Ceramic Non-Vacuum DynaCut Locking-Type Disc, 25/pack
Dynabrade 58024 - 3/4" (19 mm) Dia. Non-Vacuum Dynafine Backsplash Reverse Radius Disc Pad, Vinyl-Face
Dynabrade 90753 5" Dia. x 2" W, Coarse, Non-Woven DynaBrite Band, 10/pack
Dynabrade 78650 5/8" Dia. x 1-1/2" W x 3/16" Center Hole, Z/A, 80 Grit, 100/pack
Dynabrade 52420 3" (76 mm) Dia. 7 Degree Offset Cut-Off Wheel Tool, .5 HP, 20,000 RPM, 3/8"-24 Spindle
Dynabrade 53243 6" (152 mm) Dia. Type 11 Vertical Cup Wheel Grinder, 3 HP, 6,000 RPM, 5/8"-11 Spindle
Dynabrade 52102 .5 hp Straight-Line Die Grinder, Rear Exhaust, 4,500 RPM, 1/4" Collet
Dynabrade 79134 3/4" W x 20-1/2" L 60 Grit DynaCut Premium Ceramic Belt, 50/pack
Dynabrade Dynacut 94021, 10-piece, Alloy Specific Burr Kit (for Nickel & Titanium), 1/8" Shank
3M 81356, Venture Tape White Aluminum Foil Tape 1558HT, 72 mm a 45.7 m, 5.4 mil, 7010335933 
