Professional-grade double-sided foam tape with 90 mil thickness for permanent industrial bonding. Provides immediate handling strength, excellent shear strength, and superior conformability. Ideal alternative to mechanical fasteners and liquid adhesives with UV and temperature resistance.
3M™ VHB™ Tape 4991 is a premium double-sided foam tape engineered for permanent bonding applications across diverse industrial sectors. This innovative adhesive solution features a conformable acrylic foam core backed by a 5 mil red printed polyethylene film liner, delivering a total thickness of 90 mil (2.3 mm) when applied. The tape combines exceptional shear strength, superior conformability, and reliable surface adhesion to both high and medium surface energy materials, making it an ideal alternative to traditional mechanical fasteners such as rivets, welds, and screws, or conventional liquid adhesives.
With dimensions of 24 inches (609.6 mm) width and 36 yards (32.91 meters) length, this roll provides substantial coverage for large-scale industrial applications. The tape's multi-purpose acrylic adhesive formulation offers immediate handling strength without requiring fixtures or extended cure times, enabling faster assembly processes and improved manufacturing efficiency. Its closed-cell acrylic chemistry is proven to withstand extreme environmental conditions, resisting both high and low temperatures, moisture, UV exposure, and various chemical solvents.
The 3M™ VHB™ Tape 4991 is UL GREENGUARD™ and UL GREENGUARD™ Gold Certified, contributing to LEED® credit eligibility for sustainable construction projects. This versatile bonding solution is commonly deployed across transportation, appliance manufacturing, electronics, construction, signage, display systems, and general industrial applications. It effectively bonds aluminum, stainless steel, galvanized steel, composites, plastics, acrylic, polycarbonate, ABS, and painted or sealed wood and concrete surfaces, offering designers unprecedented flexibility in material selection and component assembly strategies.
Key Features
- Fast and easy-to-use permanent bonding with immediate handling strength requiring no fixtures or cure time
- 90 mil thickness (2.3 mm) with conformable acrylic foam core and multi-purpose adhesive for seamless bonding
- Excellent shear strength, conformability, and surface adhesion to high and medium surface energy materials
- Superior outdoor durability with resistance to extreme temperatures, moisture, UV exposure, and chemical solvents
- Multi-surface compatibility with aluminum, steel, composites, plastics, acrylic, polycarbonate, ABS, wood, and concrete
- UL GREENGUARD™ and UL GREENGUARD™ Gold Certified for LEED® credit contribution
- Proven alternative to mechanical fasteners including rivets, welds, and screws
- Versatile applications across transportation, appliance, electronics, construction, signage, and industrial sectors
- Closed-cell acrylic chemistry for extreme environment withstanding and long-lasting performance
- Enables use of thinner, lighter-weight, and dissimilar materials compared to traditional fastening methods
Technical Specifications
| Specification |
Value |
| Product Number | 4991 |
| 3M ID | 7010535573 |
| Overall Width (Imperial) | 24 inches |
| Overall Width (Metric) | 609.6 mm |
| Overall Length (Imperial) | 36 yards |
| Overall Length (Metric) | 32.91 meters |
| Thickness | 90 mil (2.3 mm) |
| Product Color | Gray |
| Liner Material | Polyethylene Film (5 mil red printed) |
| Core Material | Conformable acrylic foam |
| Adhesive Type | Multi-purpose acrylic |
| Foam Type | Conformable |
| Core Size (Imperial) | 3 inches |
| Maximum Operating Temperature (Fahrenheit) | 250°F |
| Maximum Operating Temperature (Celsius) | 121°C |
| Indoor/Outdoor | Indoor/Outdoor |
| Application | Exterior Metal Skin Bonding, Panel to Frame, Stiffener to Panel |
| Brand | VHB™ |
| Smallest Saleable Unit | Roll |
| Certifications | UL GREENGUARD™ and UL GREENGUARD™ Gold Certified |
| Surface Energy Compatibility | High Surface Energy (HSE) and Medium Surface Energy (MSE) substrates |
| Compatible Materials | Aluminum, stainless steel, galvanized steel, composites, plastics, acrylic, polycarbonate, ABS, painted/sealed wood, concrete |
| Industries | Appliance, Construction, Electronics, General Industrial, Metalworking, Signage, Transportation |
| Recommended Applications | Decorative material and trim, Nameplates and logos, Electronic displays, Panel to frame, Stiffener to panel |
| Chemical Resistance | Resistant to solvents and moisture |
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