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 01326, PSA Cloth Disc 348D, P240 X-weight, 3 in x NH, Die 300V, 7000045069
3M 77231, Scotch-Brite Roloc Deburr and Finish PRO Unitized Wheel, DP-UR, 2S Fine, TR, 2 in x 1/4 in x NH, 7010365721
3M 77116, Scotch Brite Roloc Deburr & Finish PRO Unitized Wheel, DP-UR, 4C Medium+, TR, 3 in x 1/4 in x NH, 7010295274
3M 65086, Scotch-Brite Diamond Wheel, 6" x 1" x 1" 645DC, 7010329878
3M 08301, Ultrapro Autobody Sealant, 08301, Tan, 5 oz Tube, 7100142901, 6 per case
Dynabrade 51633 .1 hp Straight-Line Extension Pencil Grinder, Central Vacuum, 1/8" Collet
3M 22393, Roloc Disc 361F, 36 YF-weight, TR, 3 in, Die R300V, 7000045093
Standard Abrasives 725002, Buff and Blend Cross Buff GP, A/O VFN, 1-1/2 in x 1/2 in x 2 Ply x 8-32, 7010368694
3M 11419, Roloc Disc 361F, P240 XF-weight, TR, 2 in, Die R200P, 7000045105
Dynabrade 14000 Dynafile Abrasive Belt Tool
Dynabrade 91165 1/2" W x 13" L 60 Grit A/O DynaCut Belt, 50/pack
3M 97956, Super 77 CA Multipurpose Spray Adhesive, Low VOC <25%, Clear, 24 fl oz Can, 7100014109, 12/Case
Dynabrade 53533 Cone or Plug Grinder (Triple Extension)
3M 20927, PSA Cloth Disc 348D, P240 X-weight, 1 in x NH, Die 100N, 7000118918
3M 98242, Marine Adhesive Sealant 3000 UV, Black, 290 mL Cartridge, 7100111111, 12/Case
3M 14559, Roloc Disc 361F, P150 XF-weight, TR, 2 in, Die R200P, 7000119021
Dynabrade 51750 .1 hp Straight-Line Extension Pencil Grinder, Rear Exhaust, 60,000 RPM, 1/8" Collet
3M 14343, Marine Adhesive Sealant 4000 UV, Black, 600 mL Sausage Pack, 7010309931, 12/Case
3M 50010, VentureClad Insulation Jacketing Tape 1577CW-WME, White, 99 mm x 13.7 m, 7010379907
Dynabrade 51811 .1 hp Straight-Line Pencil Grinder, Rear Exhaust, 1000,000 RPM, 1/16" Collet
Standard Abrasives 863299, Quick Change TR S/C Unitized Wheel, 632, 2 in x 1/4 in, 7010330149
Insize 4209-3, LONG HANDLE TELESCOPING GAGE, 3/4 ~ 1-1/4", 6928640311550
Dynabrade 14010 Dynafile Abrasive Belt Tool Versatility Kit
ACS 1/2 in x 18 in Diamond Metal Bond Belt, 120M/125u
3M 13373, Scotch-Brite Star, 4 in A CRS LS, 7000120968
3M 04229, Scotch-Brite Hand Pad 7447B, HP-HP, A/O Very Fine, 6 in x 9 in, 7000027560, 60 ea/Case
3M 20909, PSA Cloth Disc 348D, 80 X-weight, 2 in x NH, Die 200P, 7000118873
Dynabrade 51630 .1 hp Straight-Line Extension Pencil Grinder, Central Vacuum, 1/8" Collet
ACS Diamond Cloth Belt, CX1250 1/4" X 24" 75U 
