Permanent bonding without fasteners: 3M VHB Tape 4959 is a white, double-sided acrylic foam tape that bonds on contact and can replace rivets, welds, and screws for many permanent bonding and sealing jobs. It provides immediate handling strength with no fixturing or cure time, which means fabricators can eliminate drilling, welding, grinding, and the associated clean-up. The result is a faster, cleaner assembly process that keeps joined surfaces smooth and free of the holes, weld marks, and finishing work that mechanical fasteners leave behind.
Acrylic foam construction: The tape is 0.120 in (3.0 mm) thick, built on a firm acrylic foam core with a general-purpose acrylic adhesive on both faces. The viscoelastic foam does more than stick: it absorbs stress and dampens vibration and fatigue, flexing to accommodate the different expansion rates of dissimilar materials while holding the bond. That combination of strength and conformability lets designers join thin, lightweight, and mixed materials that would be difficult or unsightly to fasten mechanically.
Broad adhesion and proven durability: The general-purpose adhesive bonds to a wide range of high-surface-energy substrates, including metals such as aluminum and stainless steel, glass, and easier-to-bond paints and plastics like polycarbonate and ABS. The advanced closed-cell acrylic construction also seals against water and moisture. The tape offers strong indoor and outdoor durability across a broad temperature range and carries a UL 746C listing, making it well suited to demanding transportation, signage, appliance, and electronics applications.
Convenient formats and use: Because the bond forms on contact and continues to build afterward, assembly is simple: clean the surfaces, apply the tape, and press firmly. The group offers the tape in 0.5, 0.75, and 1 inch widths, each on a 5 yard roll, so the bond line can be matched to the part. For challenging surfaces, priming or specific surface preparation can further improve adhesion, and 3M publishes detailed guidance for those cases.
Recommended For
Replacing rivets, welds, and screws in permanent bonds
Bonding metal, glass, and high-surface-energy plastics
Nameplates, trim, panels, and display assembly
Transportation, signage, appliance, and electronics
4959 0.5IN X 5YD — 3M VHB Tape 4959 White, 0.5 in x 5 yd roll
4959 0.75IN X 5YD — 3M VHB Tape 4959 White, 0.75 in x 5 yd roll
4959 1IN X 5YD — 3M VHB Tape 4959 White, 1 in x 5 yd roll
The variants are the same 4959 tape in different widths, 0.5, 0.75, and 1 inch, each on a 5 yd roll; select the width to match your bond line.
Primary Industries
Transportation and signage
Appliance and electronics
General industrial and metalworking
Displays and construction
Standards and Certifications
UL 746C listed
FAQs
What is 3M VHB 4959 tape used for?
It is a double-sided acrylic foam tape used for permanent bonding and sealing, capable of replacing rivets, welds, and screws in many applications. It bonds metals, glass, and higher-surface-energy plastics and is used across transportation, signage, appliances, electronics, and general industrial assembly.
How thick is the tape and what color is it?
3M VHB 4959 is white and 0.120 in (3.0 mm) thick, built on a firm acrylic foam core with general-purpose acrylic adhesive on both sides. The foam thickness provides conformability and stress absorption, helping the bond withstand vibration and fatigue over long-term indoor and outdoor use.
What surfaces does it bond to?
The general-purpose adhesive bonds to a broad range of high-surface-energy substrates, including metals such as aluminum and stainless steel, glass, and easier-to-bond plastics like polycarbonate and ABS. For some surfaces, priming or specific surface preparation improves adhesion; consult 3M's guidance for demanding substrates.
Does the tape need curing or fixturing?
No. The pressure-sensitive adhesive bonds on contact to provide immediate handling strength, so no fixturing or cure time is required. Bond strength continues to build after application. This lets you eliminate drilling, welding, grinding, and clean-up while keeping joined surfaces smooth and finished-looking.
Is this tape suitable for electronics?
Yes. 3M VHB 4959 carries a UL 746C listing, which makes it suitable for a wide range of electronic products, and it offers good indoor and outdoor durability. As always, confirm the tape meets the specific requirements of your application and substrates before committing to production use.
