Professional-grade heavy duty duct tape with polyethylene and cloth construction, offering superior holding power, water resistance, and clean removal for industrial maintenance and repair applications.
3M™ Heavy Duty Duct Tape 3939 is a premium-grade industrial adhesive tape engineered for demanding maintenance, repair, and construction applications. Constructed from polyethylene film laminated to cloth with a rubber adhesive, this durable tape delivers exceptional holding power and reliability for professional and industrial use. The tape features a silver-colored backing and is specifically designed to resist curling, tearing, and deterioration in challenging environments.
This versatile tape is ideal for a wide range of applications including patching, bundling, reinforcing, sealing, splicing, and masking. Originally developed for HVAC systems, it has evolved to serve numerous industries including automotive, electronics, furniture manufacturing, and general industrial maintenance. The cloth-reinforced construction allows for easy hand tearing directly from the roll while maintaining clean, precise edges. With immediate adhesion and up to one year of indoor holding power, this tape provides reliable performance for both temporary and permanent applications.
The Heavy Duty Duct Tape 3939 offers exceptional versatility with clean removal properties that allow it to peel off opaque, non-glass surfaces with little to no residue for up to one month after application. The water-tight seal formation and maximum conformability make it suitable for irregular surfaces and tight spaces. Tested to UL723 and ASTM E84 standards, this tape can withstand temperatures up to 200°F for extended periods, making it suitable for diverse industrial environments and demanding applications.
Key Features
- High Strength Construction designed for heavy-duty maintenance, repair, and construction applications
- Clean Removal that peels off opaque non-glass surfaces with little residue for up to one month
- Reliable Hold with immediate adhesion lasting up to one year indoors without deterioration
- All-Purpose Backing with strong polyethylene that resists water, wear, and abrasion
- Water-Tight Seal forming moisture-resistant barriers for containment situations
- Maximum Conformability easily adhering to irregular surfaces and tight spaces without lifting
- Hand Tearable construction allowing easy removal directly from the roll
- Cloth-Reinforced design resisting curling and providing durability in demanding environments
Technical Specifications
| Specification |
Value |
| Part Number | 3939 |
| Product Color | Silver |
| Overall Width (Metric) | 96 mm |
| Overall Width (Imperial) | 3.77 inches |
| Overall Length (Metric) | 54.8 meters |
| Overall Length (Imperial) | 59.93 yards |
| Backing Material | Polyethylene/Cloth Scrim |
| Adhesive Type | Rubber |
| Total Tape Thickness (Imperial) | 8.6 mil |
| Total Tape Thickness (Metric) | 0.22 mm |
| Tensile Strength (Imperial) | 27 lb |
| Tensile Strength (Metric) | 47.3 N/100mm |
| Elongation at Break | 17% |
| Core Size (Imperial) | 3 inches |
| Core Size (Metric) | 76.2 mm |
| Maximum Operating Temperature (Fahrenheit) | 200°F |
| Maximum Operating Temperature (Celsius) | 93°C |
| Indoor/Outdoor Use | Indoor |
| Units per Case | 12 rolls |
| Smallest Saleable Unit | Roll |
| Shelf Life | 12 months |
| Performance Level | Performance |
| Brand | 3M™ |
| UPC Code | 00021200855634 |
| 3M ID | 7100022015 |
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