3M 3939 Heavy Duty Duct Tape Silver 48mm x 55m

3M™ 3939 is a premium industrial repair tape designed for the most demanding applications. It is perfect for splicing, masking, patching, sealing, and bundling – both for temporary and permanent repairs. Its thick rubber adhesive effectively adheres to both smooth and rough surfaces, providing a strong and durable bond. The tape exhibits high tensile strength and maintains its properties even under stress and adverse environmental conditions.

Technical specification:

• Color: silver
• Width: 48 mm
• Length: 55 m
• Adhesive type: rubber
• Backing: laminated PE fabric
• Tensile strength: high
• For indoor and outdoor applications

Application:

• Sealing and protecting pipes, ducts and cables
• Attaching films, banners and protective covers
• Bundling cable and wire harnesses
• Emergency repairs in industry, transport and construction
• Surface masking and structural reinforcement
• Edge protection and trip hazard prevention

Benefits and properties:

✅ High adhesion – effective bonding to various surfaces
✅ Strong backing – withstands stretching and stress
✅ Multi-purpose – bonds, seals, repairs and protects
✅ Abrasion and moisture resistance – also for outdoor applications
✅ Flexibility – easy to conform and apply even to uneven surfaces

Application tips:

For best results, apply the tape to a clean, dry surface. For outdoor applications, it is recommended to press the tape down with a roller or by hand to ensure maximum adhesion. Before prolonged exposure to weather conditions, it is advisable to test the tape on the given substrate.