Adhesive Aluminum Foil Tape 3M 2903, silver, 50 m x 48 mm

3M 2903 Adhesive Aluminum Foil Tape in silver is a pressure-sensitive aluminum-backed tape designed for sealing, jointing and surface protection. The tape is 50 m long and 48 mm wide and combines a conformable metal backing with an acrylic adhesive that adheres to metal, foil-faced insulation and many other construction surfaces. Its metallic surface provides a durable barrier against moisture and light mechanical abrasion while maintaining flexibility for wrapping and contouring around ducts and irregular shapes.

Advantages

The aluminum backing offers good conformability and mechanical strength while the pressure-sensitive adhesive ensures immediate handling strength and long-term adhesion. The silver finish creates a reflective surface that contributes to moisture resistance and light reflection. The tape is easy to apply by hand or with a tape dispenser and can be used on a range of substrates without the need for heat activation.

Suitable for

• HVAC duct sealing and repair
• Insulation overlap and vapor barrier sealing
• General-purpose sealing of joints and seams
• Surface protection and temporary repairs on metal surfaces

Key specifications

• Backing material: aluminum foil
• Adhesive type: pressure-sensitive acrylic
• Colour/finish: silver reflective surface
• Length: 50 m
• Width: 48 mm
• Conformability: suitable for wrapping around contours and irregular shapes

How to use

Ensure surfaces are clean, dry and free from dust, oil or loose particles before applying the tape. Measure and cut the required length, then press the tape firmly onto the substrate, smoothing out air pockets and wrinkles to ensure continuous contact. For seams and joints, overlap adjacent tape edges to create a continuous seal. For best adhesion on cold or low-energy surfaces, allow firm hand pressure across the tape edge and consider using a roller for uniform bonding. If permanent exposure to sunlight or harsh outdoor conditions is expected, verify suitability for the application.

Usage recommendations

Store rolls in a cool, dry place away from direct sunlight. Apply at moderate temperatures and allow adhesive to develop full bond strength over time; avoid overstretching the tape during application to maintain adhesive performance.