Double-sided VHB tape 3M 4611F, dark gray, 12 mm x 1.1 mm x 33 m

3M 4611F VHB double-sided tape is a dark gray, foam-based adhesive tape engineered for high-strength permanent bonding of metals, plastics and composite materials. With a 12 mm width, 1.1 mm thickness and 33 m roll length, this tape provides a uniform adhesive layer that replaces or complements mechanical fasteners, offering a clean appearance and continuous joint across bonded surfaces. The closed-cell acrylic foam core ensures stress distribution and gap-filling while retaining adhesion under varied environmental conditions.

Advantages

The acrylic adhesive system delivers strong shear and peel resistance while damping vibration and absorbing differential thermal expansion between dissimilar substrates. The foam carrier conforms to slightly irregular surfaces to improve contact and sealing, reducing the need for surface machining or secondary sealing. The dark gray color reduces visibility on darker substrates and helps create a discrete bond line. The product is supplied in a long 33 m roll suitable for continuous applications and reduces the need for frequent tape changes.

Suitable for

• Permanent bonding of metal panels, aluminum trims and brackets
• Adhesive assembly of plastics, painted surfaces and composites
• Attaching decorative trim, nameplates and signage
• Joining parts where vibration damping and load distribution are needed
• Indoor and outdoor applications that require weather-resistant adhesive joints

Key specifications

• Tape type: Closed-cell acrylic foam, double-sided
• Color: Dark gray
• Width: 12 mm
• Thickness: 1.1 mm
• Length per roll: 33 m
• Core performance: High shear and peel strength with vibration damping
• Application temperature range: Suitable for typical indoor/outdoor assembly temperatures

How to use

Ensure bonding surfaces are clean, dry and free of oils, dust or loose particles. For best adhesion, wipe surfaces with isopropyl alcohol and allow to dry fully. Cut the required length from the roll, remove the liner, and align the tape carefully to the substrate. Apply firm pressure across the bond line to activate the adhesive and ensure full contact; use a roller for uniform compression on larger areas. Allow time for the adhesive to develop full strength according to the substrate and service conditions before subjecting the joint to sustained loads.

Usage recommendations

For optimal results, use on clean, non-porous or painted surfaces and avoid prolonged exposure to solvents that may affect adhesion. When bonding low-energy plastics, perform a compatibility test or apply an appropriate primer. Store the roll in a cool, dry place away from direct sunlight to maintain adhesive performance.