Adhesive tape 3M Scotch 389 50 mm × 50 m — high adhesion, black

3M Scotch 389 is a cloth-backed adhesive tape 50 mm wide and 50 m long in black, engineered for high adhesion on difficult surfaces. The tape combines a durable fabric backing with an aggressive rubber-based adhesive to provide strong bonding, abrasion resistance and a degree of moisture tolerance. It is suitable for sealing, patching, bundling and temporary repairs in industrial, construction and maintenance environments where a robust, flexible tape is required.

Advantages

The cloth backing ensures tear resistance and conformability around irregular shapes while the high-adhesion adhesive adheres reliably to rough, textured and low-energy surfaces. Its black colour helps with visual blending and light-blocking applications. The tape resists abrasion and provides short-term protection against moisture, making it practical for on-site repairs and general maintenance tasks.

Suitable for

• Sealing joints and seams on construction materials
• Patching tears in fabric, tarpaulin and flexible materials
• Bundling cables, pipes and components
• Temporary repairs of equipment and tools
• Surface protection and abrasion resistance in high-wear areas

Key specifications

• Backing material: cloth (fabric) for flexibility and tear resistance
• Adhesive type: high-adhesion rubber-based adhesive for strong initial tack
• Width: 50 mm
• Length: 50 m
• Colour: black
• Performance: good abrasion resistance and short-term moisture tolerance

How to use

Clean and dry the surface before application to ensure maximum adhesion. Measure and cut the required length, remove the release liner if present, and apply the tape with firm pressure along the surface to eliminate air pockets. For curved or irregular shapes, stretch slightly and smooth down to conform to contours. Overlap edges where a continuous seal is required. For long-term or load-bearing applications, verify compatibility with the substrate and consider a mechanical fix in addition to the tape.

Usage recommendations

Store the tape in a cool, dry place away from direct sunlight and extreme temperatures. For best performance, apply at moderate temperatures and allow adhesive to set under pressure. Avoid prolonged exposure to solvents or high humidity when a durable watertight seal is required. When removing, peel back slowly at a low angle to reduce adhesive residue; if residue remains, use an appropriate cleaner compatible with the surface.