3M™ VHB™ Tape 4991

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FAST AND EASY-TO-USE: A permanent bonding method that provides immediate handling strength; no need to fixture or wait for a cure

SMOOTH AND SEAMLESS: With a thickness of 90 mil (2.3 mm), this tape is designed as an alternative to mechanical fasteners, such as rivets, welds, and screws, or liquid adhesives

BUILT TO PERFORM: Delivers excellent shear strength, conformability, and surface adhesion thanks to an acrylic foam core and multi-purpose adhesive

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Highlights

FAST AND EASY-TO-USE: A permanent bonding method that provides immediate handling strength; no need to fixture or wait for a cure
SMOOTH AND SEAMLESS: With a thickness of 90 mil (2.3 mm), this tape is designed as an alternative to mechanical fasteners, such as rivets, welds, and screws, or liquid adhesives
BUILT TO PERFORM: Delivers excellent shear strength, conformability, and surface adhesion thanks to an acrylic foam core and multi-purpose adhesive
DURABLE: Offers excellent outdoor durability and performance, resisting both high and low temperatures, as well as moisture
MULTI-SURFACE: Intended to adhere to a variety of High Surface Energy (HSE) and Medium Surface Energy (MSE) substrates; these may include aluminum, stainless steel, galvanized steel, acrylic, polycarbonate, and ABS
A VERSATILE OPTION: Commonly used in applications across a variety of markets, such as transportation, appliance, electronics, construction, sign and display, and general industrial
CERTIFIED: UL GREENGUARD™ and UL GREENGUARD™ Gold Certified; helps contribute to LEED® credits
DO MORE: Allows for the use of thinner, lighter-weight, and dissimilar materials when compared to rivets and welds
EXCELLENT BONDING AND SEALING: Features closed-cell acrylic chemistry, which is proven to withstand extreme environments

3M™ VHB™ Tape 4991 is a double-sided tape comprised of a multi-purpose acrylic adhesive with a conformable, foam core backed on a 5 mil red printed polyethylene film liner, delivering a total thickness of 90 mil (2.3 mm) when applied. This tape provides an excellent balance of strength, conformability, and adhesion to high and medium surface energy materials, making it a smooth, seamless alternative to rivets, welds, and screws. These unique attributes equip 3M™ VHB™ Tape 4991 to take on many bonding and sealing applications, including attaching metal panels to frames and stiffener attachment. Discover new ways to design thanks to the versatility, viscoelasticity, and powerful bonding potential of 3M™ VHB™ Tape 4991.

Convenience Meets Extreme Bonding Power
Our 3M™ VHB™ Tape consists of a durable acrylic adhesive with viscoelastic properties. This provides an extraordinarily strong double sided foam tape that adheres to a broad range of substrates, including aluminum, stainless steel, galvanized steel, composites, plastics, acrylic, polycarbonate, ABS and painted or sealed wood and concrete. Our bonding tapes provide excellent shear strength, conformability, surface adhesion and temperature resistance. They are commonly used in applications across a variety of markets including transportation, appliance, electronics, construction, sign and display and general industrial. Reliably bonds a variety of materials with strength and speed for permanent applications.

Recommended Applications

Decorative material and trim
Nameplates and logos
Electronic displays
Panel to frame
Stiffener to panel

Dream, Design, Deliver with the 4941 Family of 3M™ VHB™ Tapes
The 4941 family of 3M™ VHB™ Tapes utilizes multi-purpose acrylic adhesive on both sides of a conformable, foam core. The combination of strength, conformability and adhesion makes this family one of the most capable and well-rounded 3M™ VHB™ Tapes. It is specifically designed for good adhesion to metals, glass and other medium to high surface energy materials. Applications for this tape include stiffener bonding, sealing polycarbonate lens over LCD, windows to painted control panels and mounting vinyl wiring ducts and conduit channels.

3M™ VHB™ Tape 4991 is effective at bonding and sealing polycarbonate lens over LCD

An Unconventional Foam Tape
We invented 3M™ VHB™ Tapes in 1980 as the first of their kind. These unique tapes combine conformability with a strong, permanent bond. The result is a family of extraordinarily strong tapes that adhere to a broad range of substrates. 3M™ VHB™ Tape is a proven alternative to screws, rivets, welds and other forms of mechanical fasteners. Skyscrapers, cell phones, electronic highway signs, refrigerators, architectural windows and more all rely on this specialty bonding tape for one or more steps in the assembly, mounting, fastening and sealing process. This trusted and reliable tape offers a consistent bond, outstanding durability and excellent solvent and moisture resistance. 3M stands by all of its products and is there to provide you with design guidance and technical support when you need it.

Proven Reliability from 3M™ VHB™ Tapes
3M™ VHB™ Tape offers a durable bond in a way that mechanical fasteners can't. This tape enhances the appearance of finished goods by eliminating rivets and screws while providing immediate handling strength. In most cases, fastening with 3M™ VHB™ Tape is a quicker process than drilling, fastening, or using liquid adhesive. Our versatile line of tapes can be used indoors or outdoors in a variety of applications, including window, door and sign assembly, electronics, construction and countless other industrial applications. Chemically resistant as well as UV and temperature stable, 3M™ VHB™ Tape can withstand the heat of Dubai to the cold of Canada. The unique acrylic chemistry is extremely durable and resistant to change over time, making this a long-lasting and powerful tape you can trust.

Bringing Better Ideas to the Surface through Science and Innovation
In our 3M Industrial Adhesives and Tapes Division, we apply the science of adhesion to deliver innovative solutions that improve the design and manufacturing processes of companies around the world. In the end, our technologies help customers like you deliver competitive products to the market faster and more efficiently.

Typical properties

Details

Adhesive Type	Acrylic
Application	Bonding a logo to an Oven, Commercial Vehicle Roof Vent Attachment, Decorative Appliance Trim Attachment, Impact Resistance, Interior Rail Car Construction, Kickplates, Logo Bonding on TV, Panels to Frame, Rail Car Bonding Metal Stiffeners, Rail Car Light Cover Attachment, Steel Fan Bracket Bonding, Stiffener Attachment, TV Stand Decorative Trim Attachment, Alternatives to Rivetting or Welding, Aluminum Floor Bonding, Bonding Door Kick & Seal Plate, Metal Bonding, Mounting & Trim Attachment, Nameplate Attachment on Commercial Vehicles, Panel to Frame/Stiffner to Panel Assembly, Panel & Trim Bonding, Vibration resistant, Vehicle Signage Frame Attachment, Bonding Glass to a Metal Clothes Washer Door, Bonding Glass to a Metal Oven Door, Bonding Header Panel, Bonding Luggage Compartment Doors, Bonding Muntin Bars to Glass, Bonding Panels to Metal Frames, Bonding a logo to a Refrigerator, Wall & Door Panel Attachment, Washing Machine Touch Panel Bonding, Exterior Metal Skin Bonding
Backing (Carrier) Material	Acrylic Foam
Backing (Carrier) Thickness (Imperial)	5 mil
Brands	VHB™
Core Size (Imperial)	3 in
Foam Type	Conformable
Indoor/Outdoor	Indoor/Outdoor
Industries	Signage, Metalworking, Appliance, Transportation, Construction, General Industrial, Electronics
Liner Material	Polyethylene Film
Maximum Operating Temperature (Celsius)	121 ℃
Maximum Operating Temperature (Fahrenheit)	250 ℉
Product Color	Gray, Black
Smallest Saleable Unit	Roll
Units per Case	9.0, 18.0

Dimensions and Classifications

Overall Length (Imperial)	36 yd
Overall Length (Metric)	32.91 m, 32.92 m
Overall Width (Imperial)	0.25 in, 0.4375 in, 0.5 in, 0.75 in, 1 in, 24 in
Overall Width (Metric)	6.35 mm, 11.113 mm, 12.7 mm, 19.05 mm, 25.4 mm, 609.6 mm

Resources

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Similar products

	Current product 3M™ VHB™ Tape 4991	3M™ VHB™ Tape 4991B
Overall Width (Metric)	6.35 mm, 11.113 mm, 12.7 mm, 19.05 mm, 25.4 mm, 609.6 mm
Overall Width (Imperial)	0.25 in, 0.438 in, 0.5 in, 0.75 in, 1 in, 24 in
Backing (Carrier) Material	Acrylic Foam
Product Color	Gray, Black
Overall Length (Metric)	32.91 m, 32.92 m
Overall Length (Imperial)	36 yd

For industrial/occupational use only. Not for consumer sale or use.

3M industrial and occupational products are intended, labeled, and packaged for sale to trained industrial and occupational customers for workplace use. Unless specifically stated otherwise on the applicable product packaging or literature, these products are not intended, labeled, or packaged for sale to or use by consumers (e.g., for home, personal, primary or secondary school, recreational/sporting, or other uses not described in the applicable product packaging or literature), and must be selected and used in compliance with applicable health and safety regulations and standards (e.g., U.S. OSHA, ANSI), as well as all product literature, user instructions, warnings, and other limitations, and the user must take any action required under any recall, field action, or other product use notice. Misuse of 3M industrial and occupational products may result in injury, sickness, death, or property damage. For help with product selection and use, consult your on-site safety professional, industrial hygienist, or other subject matter expert.