3M Adhesion Promoter [Sponge Applicator Packet] (4298)

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5 Reviews
2 Question & Answers
  • Quantity
    View "Full Pricing Table" below for details including case sizes and volume pricing.
  • Color
  • Size
    2.5cc sponge applicator
  • Price
    $ Price/photo will update once Color & Size chosen.
Before ordering, please read the "Product Description & Specs" tab content for more information about this item.

Product Description

3M 4298 Adhesion Promoter is formulated specifically for use with 3M VHB acrylic foam tapes to achieve a permanent bond with low surface energy plastics used for automotive dashboards, interior trim, and exterior trim applications. It works well with LSE plastics, as well as TPO, PPO, PP, PC, PC and ABS. 3M Adhesive Promoter is supplied in an easy-to-use sponge applicator packet, for a fast and precise application. Convenient to use, it dries within 30 to 90 seconds. Each sponge applicator packet contains .85 ounces (2.5 cc) of adhesion promoter, enough to cover up to 150 square inches. Since formulations and surface energies can vary for these types of materials, each application should be verified through testing.

Product Applications

  • Automotive instrument panel and interior trim
  • Injection-molded side body side moldings
  • Automotive claddings
  • For use with 3M™ Acrylic Foam Tapes and 3M™ Acrylic Plus Tapes
Country of Origin: United States.

Application Instructions

The liquid contents of the packet should be completely used as soon as possible after opening. Hold packet upright and avoid squeezing an opened packet to prevent spillage of liquid contents. The packet can be opened by tearing across the top of the packet at the notches. This will expose the sponge applicator. Do not remove the sponge or squeeze a freshly opened packet. Handling the bottom section of the packet should enable application of 3M adhesion promoter 4298 with no mess. Apply a thin, uniform coating to the bonding surface, using the minimum amount that will fully coat the surface. A wet coating thickness of 0.002 inches or less is recommended. Apply promoter only to areas that will be fully covered with tape. Although drying times may vary due to temperature and/or humidity, a drying time of 30 to 90 seconds is typically indicative of this thickness. The primer should be dry before applying tape. For best results, apply tape immediately after primer application or no more than one hour afterward. Be sure the primed surface remains free from contaminants prior to tape application.
* Multiple cases may be shipped per package in order to minimize the charge for shipping.


Technical Information

3M Adhesion Promoter (4298)
  • Shelf Life: 12 months
  • Vehicle: Plaster
  • Country of Origin: United States
Note: Specifications are those given by manufacturers and are not tested for accuracy.

Download Datasheets

The following downloads are available for this product:

Download Material Safety Data SheetDownload Product Data Sheet

4298 Standard sizes


2.5cc sponge applicator

4298/ 25

UPC = 021200275715

Single Item (1-49 Items)

1 - 4 Cases (50-249 Items)

5 - 9 Cases (250-499 Items)

10+ Cases (>= 500 Items)


a 13% discount

a 14% discount

a 15% discount





Question & Answers

[ viewing questions 1 through 2 of 2 total ]
John Nov 01, 2017
QUESTION: When using 4298 promoter do you have to clean surface with alcohol first I am applying a carbon fiber part on car bumper
ANSWER: The adhesion promoter won’t clean a substrate so for the absolute best bond cleaning first with alcohol would be recommended. Thank you.
Customer Sep 18, 2017
QUESTION: After applying the adhesive promoter, how long should I wait to install a spoiler to my car?
ANSWER: As soon as possible. Because it is a promoter apply your tape as soon as you apply to the area, then complete your installation.

User Reviews

[ viewing reviews 1 through 5 of 5 total ]
frank k. Verified Buyer Jul 05, 2018
Great product good price
3M 4298 Adhesion Promoter [Sponge Applicator Packet]
Great product good price
Ray Verified Buyer Apr 28, 2016
excellent product,need to use when preparing surface
3M 4298 Adhesion Promoter [Sponge Applicator Packet]
Used the product prep surface for better bonding
Judy Verified Buyer May 26, 2014
great product
3M 4298 Adhesion Promoter [Sponge Applicator Packet]
for eye lashes on my wife car, so far working great
Brad Verified Buyer Jun 08, 2012
3M 4298 Adhesion Promoter [Sponge Applicator Packet]
This stuff gets the job done and that's all there is to it. If there is something your VHB will not stick to, this will make it work.
Brad Verified Buyer Mar 22, 2012
Just what I was looking for
3M 4298 Adhesion Promoter [Sponge Applicator Packet]
If VHB isn't strong enough for you, this may change that. I use VHB for several things around the studio and it just doesn't cut it for the one application, this however changed that and now I have a much stronger bond and won't waste as much material.
Made in the USA
hot melt rubber (synthetic)
Offers the widest range of application flexibility available. Exhibits excellent processing performance whether manually or automatically applied. Has superior tensile strength, adhesion properties and holding force which ensures consistent, reliable seals. Hot melt adhesive will bond faster to a surface which is referred to as quick-grab or quick-stick. It typically has higher tack (will feel stickier to the touch), but is also softer. It has lower heat resistance, shear resistance, and sometimes UV resistance than an acrylic adhesive. NOTE: it is called hot melt because the adhesive is applied hot by the manufacturer and then hardens as it cools (you do not need to apply heat to the tape yourself).
natural rubber
Properties are similar to that of hot melt rubber, but natural rubber often holds where other adhesives won't (recycled fibers, dust, cold, heat and heavy loads). It provides good overall adhesion and moisture resistance.
Offer excellent performance, especially for applications in temperatures less than 40°F and greater then 120°F. It provides excellent clarity, has high shear strength, is usually more permanent/durable even when exposed to moisture, and it ages well over extended periods in fluorescent and sunlight. Since it remains clear for the life of the application and does not yellow over time it is ideal for applications such as sealing white cartons. While it has good initial adhesion it does take 24-48 hours to cure and to achieve its maximum bond strength (has gradual adhesion buildup). Another difference between hot melt rubber and acrylic adhesive is if you fold tape over making the two adhesive sides touch the acrylic adhesive will remain attached to the carrier (e.g. paper, film) while a hot melt adhesive will stick to itself and pull off of the carrier. It is the best choice for clarity, UV resistance and aging characteristics.
Is great for extreme temperature applications since silicone adhesive can work in continuous operating temperatures from -100°F to 500°F. They also exhibit good chemical resistance, retain electrical properties, and remove cleanly with little or no residue.
zinc oxide
Zinc oxide based adhesive formula is a skin-friendly adhesive which is commonly used on sports medicine tapes.
Thickness, AKA caliper or gauge, refers to the distance from one surface of a tape backing, or adhesive, to the other.
1 mil = 1/1000 of an inch
Examples: 1/16 inch = 62.5 mils; 1/32 inch = 31.25 mils
The cut level indicates how many grams of cutting load a glove can withstand from a sharp blade before being penetrated.
Lower gauge gloves are heavier - have thicker construction, fewer stiches knitted per inch and offer less dexterity.
Higher gauge gloves are lighter - have thinner/finer construction, more stitches knitted per inch and offer more dexterity.
Gloves offered typically runs from 7 to 18 (12 and 13 are in the middle of the scale).
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