Premium double-sided foam tape with acrylic adhesive for industrial bonding. Provides immediate handling strength, excellent durability, and superior adhesion to metals, plastics, and composites. UL certified and suitable for transportation, appliance, electronics, and construction applications.
3M™ VHB™ Tape 4991 is a premium double-sided foam tape engineered for industrial bonding and sealing applications. This high-performance adhesive tape features a conformable acrylic foam core with multi-purpose acrylic adhesive, backed by a 5 mil red printed polyethylene film liner. With a total thickness of 90 mil (2.3 mm), this tape delivers exceptional strength, conformability, and adhesion to a wide range of substrates including aluminum, stainless steel, galvanized steel, composites, plastics, acrylic, polycarbonate, ABS, and painted or sealed wood and concrete. The tape provides immediate handling strength without requiring fixtures or cure time, making it an excellent alternative to mechanical fasteners such as rivets, welds, and screws, as well as liquid adhesives.
Designed for versatility across multiple industries, 3M™ VHB™ Tape 4991 excels in transportation, appliance, electronics, construction, signage, and general industrial applications. The tape offers excellent outdoor durability with resistance to both high and low temperatures, as well as moisture. Its closed-cell acrylic chemistry ensures proven performance in extreme environments and provides outstanding solvent and moisture resistance. The tape is UL GREENGUARD™ and UL GREENGUARD™ Gold Certified, contributing to LEED® credits and supporting sustainable building practices.
This innovative bonding solution allows designers and manufacturers to utilize thinner, lighter-weight, and dissimilar materials compared to traditional fastening methods. Common applications include decorative material and trim attachment, nameplates and logos, electronic displays, panel-to-frame bonding, and stiffener-to-panel attachment. The 36-yard roll with 7/16-inch width is packaged in cases of 20 rolls, providing substantial material for high-volume industrial operations. 3M stands behind this trusted product with comprehensive design guidance and technical support.
Key Features
- Fast and easy-to-use permanent bonding with immediate handling strength requiring no fixtures or cure time
- Double-sided foam tape with 90 mil thickness providing smooth and seamless alternative to rivets, welds, screws, and liquid adhesives
- Excellent shear strength, conformability, and surface adhesion thanks to acrylic foam core and multi-purpose adhesive
- Outstanding outdoor durability with resistance to high and low temperatures, moisture, UV exposure, and extreme environments
- Multi-surface bonding capability for HSE and MSE substrates including aluminum, stainless steel, galvanized steel, acrylic, polycarbonate, and ABS
- UL GREENGUARD™ and UL GREENGUARD™ Gold Certified supporting LEED® credits and sustainable building practices
- Versatile applications across transportation, appliance, electronics, construction, signage, and general industrial markets
- Enables use of thinner, lighter-weight, and dissimilar materials compared to traditional mechanical fasteners
- Closed-cell acrylic chemistry proven to withstand extreme environments with excellent solvent and moisture resistance
- Polyethylene film liner backing for protection and easy application
Technical Specifications
| Specification |
Value |
| Product Name | 3M™ VHB™ Tape 4991 |
| Part Number | 4991 |
| 3M ID | 7010535557 |
| Overall Width (Imperial) | 0.4375 in (7/16 in) |
| Overall Width (Metric) | 11.113 mm |
| Overall Length (Imperial) | 36 yd |
| Overall Length (Metric) | 32.91 m |
| Tape Thickness | 90 mil (2.3 mm) |
| Core Size (Imperial) | 3 in |
| Adhesive Type | Multi-purpose Acrylic |
| Foam Type | Conformable Acrylic Foam |
| Liner Material | Polyethylene Film (5 mil red printed) |
| Product Color | Gray |
| Maximum Operating Temperature (Fahrenheit) | 250 ℉ |
| Maximum Operating Temperature (Celsius) | 121 ℃ |
| Indoor/Outdoor | Indoor/Outdoor |
| Application | Exterior Metal Skin Bonding |
| Packaging | 20 Roll/Case |
| Smallest Saleable Unit | Roll |
| Brand | VHB™ |
| Certifications | UL GREENGUARD™ and UL GREENGUARD™ Gold Certified |
| Industries | Appliance, Construction, Electronics, General Industrial, Metalworking, Signage, Transportation |
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