3M™ VHB™ Tape 4991
3M™ VHB™ Tape 4991 offers a fast, easy-to-use permanent bonding method with high strength and long-term durability. Its gray, 0.090 in (2.3 mm) thickness, multi-purpose acrylic adhesive with a conformable foam core can replace mechanical fasteners like rivets, welds, and screws, as well as liquid adhesives. The tape provides virtually invisible fastening to keep surfaces smooth, and design flexibility due to its viscoelasticity. It adheres strongly to a variety of surfaces like aluminum, stainless steel, plastics, wood, and concrete that makes it suitable for various industries like transportation, appliance, electronics, construction, and more.
The 4941 family of 3M™ VHB™ Tapes with similar adhesive properties, expands its application range to metals, glass, and other medium to high surface energy materials. 3M™ VHB™ Tapes are well known for their strong and permanent bond. Its conformability to a broad range of substrates, make them a reliable alternative to traditional fastening methods.
- Strong Permanent Bond: Delivers high-strength, long-lasting adhesion that replaces screws, rivets, welding and liquid adhesives in demanding industrial applications.
- 2.3 mm Conformable Acrylic Foam Core: Thick, flexible foam core easily conforms to irregular and uneven surfaces while maintaining exceptional bonding strength.
- Fast & Easy Application: Pressure-sensitive acrylic adhesive provides immediate handling strength, helping reduce assembly time and improve manufacturing efficiency.
- Excellent Multi-Surface Adhesion: Bonds securely to aluminum, stainless steel, galvanized steel, composites, acrylic, polycarbonate, ABS, painted metals, sealed wood, concrete and other medium to high surface energy materials.
- Smooth, Professional Finish: Eliminates visible mechanical fasteners and weld marks, providing a clean, aesthetically pleasing appearance.
- Reliable Bonding & Sealing: Creates a durable seal that resists water, moisture, dust, vibration, and environmental exposure for long-lasting performance.
- Superior Conformability: The viscoelastic foam core absorbs stress, accommodates thermal expansion, and maintains reliable bonding even on slightly uneven surfaces.
- High Shear Strength & Impact Resistance: Designed to withstand vibration, dynamic loads, and mechanical stress in industrial and transportation applications.
- Indoor & Outdoor Performance: Suitable for both interior and exterior applications with excellent resistance to weathering, moisture, UV exposure, and operating temperatures up to 121°C.
- Versatile Industrial Solution: Widely used across appliance manufacturing, transportation, electronics, construction, signage, metal fabrication, and general industrial assembly.
| Adhesive Type | Acrylic |
| Brands | VHB™ |
| Foam Type | Conformable |
| Indoor/Outdoor | Indoor/Outdoor |
| Industries | Appliance, Construction, Electronics, General Industrial, Metalworking, Signage, Transportation |
| Liner Material | Polyethylene Film |
| Maximum Operating Temperature (Celsius) | 121 ℃ |
| Product Colour | Grey |
| Size | As per your requirement |
Recommended Applications
- Panel-to-Frame Bonding: Securely bonds metal, composite or plastic panels to structural frames without the need for screws or rivets.
- Stiffener-to-Panel Assembly: Permanently bonds reinforcing stiffeners to thin panels, improving rigidity while maintaining a clean appearance.
- Electronic Display Assembly: Ideal for mounting electronic displays, control panels and electronic housings requiring durable, vibration-resistant bonding.
- Polycarbonate Lens Bonding: Provides reliable sealing and attachment of polycarbonate lenses over LCD displays and electronic equipment.
- Decorative Trim Installation: Permanently attaches decorative trims, moldings, and finishing components with a seamless, professional finish.
- Nameplate & Logo Mounting: Securely fixes product labels, logos, identification plates and branding elements to metal, plastic and glass surfaces.
- Construction & Architectural Bonding: Suitable for bonding architectural panels, interior components, signage and building assemblies requiring durable adhesion.
- Transportation Industry: Used for bonding vehicle panels, interior trims, signage, electronic components and lightweight structural assemblies.
- Signage & Display Fabrication: Delivers dependable bonding for indoor and outdoor signboards, display systems, advertising panels and exhibition fixtures.
- General Industrial Bonding: A versatile solution for permanently joining metals, plastics, composites, glass and other engineering materials across multiple industries.
- What is 3M™ VHB™ Tape 4991 used for?
3M™ VHB™ Tape 4991 is designed for permanent bonding of panels, stiffeners, electronic displays, trims, signage, logos, and structural components where excellent conformability and high-strength adhesion are required. - Can 3M™ VHB™ Tape 4991 replace screws and rivets?
Yes. It is engineered to replace mechanical fasteners such as screws, rivets, spot welding, and liquid adhesives while providing a cleaner appearance and reducing assembly time. - What materials does this tape bond?
It bonds securely to aluminum, stainless steel, galvanized steel, acrylic, polycarbonate, ABS, composites, painted metals, sealed wood, concrete, plastics, and other medium to high surface energy substrates. - Why choose 3M™ VHB™ Tape 4991 over firmer VHB tapes?
Its 2.3 mm conformable foam core adapts more easily to uneven or irregular surfaces while maintaining strong structural bonding and excellent stress distribution. - Is the tape waterproof?
Yes. The acrylic foam core forms a permanent seal that resists water, moisture, dust, and environmental contaminants, making it suitable for demanding indoor and outdoor applications. - Can it be used outdoors?
Yes. It offers excellent resistance to weather, UV exposure, vibration, and moisture, making it suitable for long-term outdoor installations. - What is the thickness of 3M™ VHB™ Tape 4991?
The tape features a 2.3 mm (90 mil) conformable acrylic foam core, making it ideal for applications requiring gap filling, excellent surface conformity, and high-strength structural bonding.
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Customized Solutions of 3M Industrial Tapes
Custom Size Tapes Rolls
The 3M Industrial range of Tapes comes in standard widths & lengths only, however, to cater to customized requirements of widths & lengths 3M Industrial Tapes & adhesive division appointed an authorised convertor. We bring 3M authorized converters and have the latest jumbo roll & log roll tape razor-slicing machine to cut the tapes as per the client’s requirements. Also, for the customized length of the tapes, we have rewinder length counting features.
Custom Shape Die Cut Tapes
We have all the capability and hi-tech machines to provide the die-cut tape parts converted from jumbo tape rolls of 3M Industrial Tapes & other world-leading Industrial Tapes. We have various Die Cutting machines to convert any type of Tape die cutting & use the best-fit machine as per the project requirement that can be:
Lamination
Most 3M tapes come with signal side silicon liners paper and for any type of Tape die cutting it’s required to laminate the other side of tapes with liners. We have various types of Tapes, and national machines to execute all types of Tapes roll laminations. Also, we have expertise in laminating two different types of Tapes or engineering performance materials.
