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3M 4941 VHB Double-Sided Acrylic Foam Tape, 45 mil, 0.5" x 5 Yards (Dark Grey)

3.9 out of 5 stars 126 customer reviews
| 14 answered questions

Price: $20.95 & FREE Shipping on orders over $49. Details
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Specifications for this item
Part Number 3M-4941-.5-5
Brand Name 3M
Material Type Acrylic
Color Dark Grey
LowerTemperature Range 50  Degrees Fahrenheit
Upper Temperature Range 200  Degrees Fahrenheit
UPC 696738624030
Dielectric Strength 360 volts
EAN 5448095740039 , 0696738624030
Item Weight 2.4 ounces
Manufacturer Series Number 4941
Number of Items 1
Outside Diameter 3  inches
Overall Length 5  yards
Overall Width .5  inches
System of Measurement Inch
Tensile Strength Max 85  PSI
Thickness .045  mm
UNSPSC Code 31201500

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Frequently Bought Together

  • 3M 4941 VHB Double-Sided Acrylic Foam Tape, 45 mil, 0.5" x 5 Yards (Dark Grey)
  • +
  • TapeCase 1 in Width x 5 yd Length, Converted from 3M VHB Tape RP25  (1 Roll)
  • +
  • 3M Scotch RP25 VHB Tape: 1/2 in. x 15 ft. (Grey)
Total price: $44.79
Buy the selected items together

Special Offers and Product Promotions


Product Features

  • Very High Bond Conformable Acrylic Foam Tape has adhesive both sides to promote excellent adhesion to a broad range of surfaces
  • Capable of replacing rivets, spot welds, liquid adhesives, and other permanent fasteners
  • The conformable foam provides good contact, even with mismatched substrates
  • Resistance to solvents, moister and plasticiser migration
  • Provides more uniform seal on irregular surfaces

Product Description

Product Description

VHB tapes are suitable for bonding sealed wood, many plastics, composites and metal. Meets UL746C. After application, the bond strength will increase as the adhesive flows onto the surface. At room temperature, approximately 50% of the ultimate strength will be achieved after 20 minutes, 90% after 24 hours and 100% after 72 hours. In some cases, bond strength can be increased and ultimate bond strength can be achieved more quickly by exposure of the bond to elevated temperatures (e.g. 150°F [66°C] for 1 hour).

From the Manufacturer

3M&™ VHB™ Tape 4941 is a conformable, double-sided, pressure-sensitive, closed-cell acrylic foam tape with a paper liner, designed to permanently adhere one material to another while spreading the stress load across the entire length of the joint. Once materials are joined, the tape creates a strong bond that resists moisture, plasticizers and temperature extremes.

 

Window grill attached with VHB tape
Window grill fastened with VHB™ Tape 4941 view larger
VHB Tape bonds instantly
VHB™ Tapes bond instantly – no welding or cleanup view larger
Window grill detail
Detail view of how VHB™ Tape attaches to window grill view larger

The Better Way to Bond
3M™ VHB™ Tape fits into grooves, around corners and through curves while offering a durable bond. The result is an extraordinarily strong tape that holds fast to a wide range of materials. Applications include bonding and sealing lenses over LED panels, bonding pre-painted metals, bonding and sealing plastic windows to pre-painted panels. 3M™ VHB™ Tape can enhance 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. 3M™ VHB™ tape can be used indoors or outdoors in a variety of applications, including window and door assembly, sign assembly, electronics, maintenance and dozens of other industrial applications.

 

Documented Reliability
3M™ VHB™ Tape 4941 provides cushioning, damping, and impact resistance. The tape is also plasticizer resistant and carries a UL listing, 746C. Qualification for this listing requires high-strength retention after extended exposure to high temperatures, humidity, cold, and cyclic conditions. The listing below details 3M™ VHB™ Tape 4941 with the UL 746C listing, and substrate combinations, as well as the maximum listed temperature for each combination.

 

Can Tape Really Replace Mechanical Fasteners?
Yes! 3M™ VHB™ Tape is a proven alternative to screws, rivets, welds and other forms of mechanical fasteners. Skyscrapers, cell phones, electronic highway signs, refrigerators, marine electronics, architectural windows, recreational vehicles and trailers all rely on 3M™ VHB™ tape for one or more steps in the assembly, mounting, fastening, and sealing process. When joining seams, 3M™ VHB™ tape helps create clean, smooth, water-resistant results without rows of rivet, fastener heads, or weld seams, which also allows for large-area graphic application with no need for additional smoothing to accommodate fastener head protrusions.

 

About 3M Industrial Adhesives and Tapes
For more than a century, 3M has applied innovation and technology to improving our customers’ lives and supporting their business goals. Today the company, from its headquarters in St. Paul, Minnesota, serves industrial and commercial customers and consumers in nearly 200 countries. 3M Industrial Adhesives and Tapes include application-specific products that provide durability, strength, and special characteristics such as temperature resistance and short- and long-term protection. The 3M brand, across thousands of products, represents consistency, superior quality, and value.


Product Details

  • Product Dimensions: 4.7 x 4.6 x 0.5 inches ; 2.4 ounces
  • Shipping Weight: 2.4 ounces (View shipping rates and policies)
  • Domestic Shipping: Item can be shipped within U.S.
  • International Shipping: This item can be shipped to select countries outside of the U.S. Learn More
  • ASIN: B004V40IUS
  • Item model number: 3M-4941-.5-5
  • Average Customer Review: 3.9 out of 5 stars  See all reviews (126 customer reviews)
  • Amazon Best Sellers Rank: #6,097 in Industrial & Scientific (See Top 100 in Industrial & Scientific)
  • Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

Customer Questions & Answers

Customer Reviews

Top Customer Reviews

This stuff is the real deal. I am a mechanical engineer, and I work for a GPS company that designs automation equipment for tractors and other farm equipment. We regularly use 3M VHB (4941 is our default) to secure components to machines in the harsh agricultural environment when drilling holes is sometimes simply not an option. A common application we have for this is to secure a ~2 lb steering sensor to the control arms of a tractor. It just works.

The key with this, as with any other adhesive-based product, is proper substrate preparation. It needs to not only be clean, but free of any oily residues. Don't wipe it with regular household cleaners, as they tend to leave behind residue. Your final pass should be with 99% or higher isopropyl alcohol. The standard household rubbing alcohol is usually 70-90% alcohol, and the rest is mostly water. This works too, but 99% is better.

Also, ideal application temperature is 68-104F (20-40F). Below these temperatures, the adhesive doesn't like to bond well to the substrate. Adding a little pressure and heat will always help the bond.

If you are bonding to a very slick surface (low surface energy) such as a powder coated steel or polyethylene, you may need a different VHB product. We have used 4952 in these applications with good success, which is specifically designed for LSE substrates. You can find it for a decent price at McMaster.com
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I don't know why some people are having problems with this tape. Modern Marvals did a skit on this tape, those guys know thier stuff. This VHB tape is super sticky after the cure time. I must admit, I was scepticle at first because the tape is not very sticky at first. I bought it to attach a battery powered LED light to my bathroom ceiling above the bath tub. The ceiling is tile that normal double sided tape would not stick to. After a few days I decided the light needed to be moved over a few inches. The light housing broke when I tryed to move it, which was made of fairly thick plastic. The tape would not let go of the broken piece which was still stuck to the tile. I had to put some wieght into it to get it off the ceiling. I Reinstalled another light with no failure. I have since used this tape for mounting other things without fail. Tip: I found you must prepare the surfaces that are being attached by using some rubbing alcohol, and let dry. Wipe clean any residue left behind and apply the tape, you have 3 days to remove the tape before it is stuck for good.
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We recently moved into a new house. I had to purchase 15 window blinds before we moved in. I measured the inside of the frame and, upon receiving them, found out they could not be mounted on the inside because they are vinyl sash windows. OOPS! I couldn't return the custom-cut blinds and I didn't have time to order more before the move so my husband suggested VHB tape. I thought there was NO WAY this tape would hold blinds that size and weight but I purchased it anyway.

I wiped down the window frame and cut the tape to fit the mounting brackets. I applied the tape to the brackets and heated it with a hair dryer. Then, I applied the brackets to the inside of the frame. The next day, I put up the first "test" blind and it held. We came back the next day and it was still up so I went ahead with the rest of them. An hour later, all of the blinds were installed. It has been almost two months and we haven't had a single incident. They are all still holding well with regular use.

I honestly think that if I had a choice between mounting the blinds with screws and mounting them with this VHB tape, I would do the tape again. It was that easy! I can't wait to find more applications for this amazing tape.
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I used this to secure a large acrylic (plastic) mirror to a piece of plywood. It worked perfectly. I went to their website and emailed 3M first to ask which of their VHB tapes I should use for these materials. They emailed back within 24 hours--very helpful. There are different types of VHB tapes for different materials. The tape is not very sticky right off the roll. The adhesion is a process. It's adhesion strengthens over 3 days once it's on the material you are adhering. As other reviewers have said, you need to give the bond 72 hours to sit unused for it to properly adhere. According to the 3M website, the adhesive on this tape actually " flows into the microscopic irregularities of the surface to form very strong bonds. "
This is a small roll of tape, 5 yards doesn't go all that far. Excellent product.
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I contacted several upholstery shops who claimed my convertible top would have to be replaced after the window broke loose from the canvas. They say you can't reaffix the window with anything available on the market, gotta have pro strength stuff that the manufacturers use, well this is it! When I pulled the bottom rail off this tape is exactly what I pulled off. I reinstalled & waited the appropriate cure time (which btw is up to 72hrs) and my top looks brand new again.
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I have a monitor, and I have 2 Klipsch satellite speakers. Being a gamer and audiophile I demand that the sound on my monitor be centered on the screen and the only way to do that is to have the speakers directly on each side and touching. The problem is that my monitor overhangs past the edge of my desk so there is nowhere to put the speaker. I had been using double sided servo tape and packing tape but it looked ghetto and every time the speaker was bumped it would bob around a few days before falling off.

I cleaned off the old tape and residue and used 5" of this 3m tape and that speaker might as well be welded to the screen. I've bumped into it several times and it didn't so much as budge.

If I could only remember where I put the rest of the roll.....
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