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3M Dynatron Auto Seam Sealer Caulk, 550, Grey Color, Permanently Elastic, Fast-Skinning, Non-Staining, Non-Sagging, 12 oz

4.6 4.6 out of 5 stars 1,225 ratings

To see product details, add this item to your cart. You can always remove it later.
Available at a lower price from other sellers that may not offer free Prime shipping.
12 FL OZ
Grey

Purchase options and add-ons

Color Grey
Brand 3M
Item Weight 12 Ounces
Item Form Paste
Water Resistance Level Waterproof

About this item

  • EASY APPLICATIONS: Brushable and paintable consistency
  • HIGH ADHESION: Works on both bare metal and painted surfaces
  • FAST SKINNING: Starts in about 10 to 15 minutes
  • STAYS IN PLACE: Less likely to drip, sag or run out of gaps being sealed
  • NON-STAINING: For all-purpose autobody joint and seam sealing
  • For industrial/occupational use only. Not for consumer sale or use.
See more product details

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$16.55 ($1.38/Ounce)
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$12.58 ($0.84/Ounce)
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3M Dynatron Auto Seam Sealer Caulk, 550, Grey Color, Permanently Elastic, Fast-Skinning, Non-Staining, Non-Sagging, 12 oz
3M Dynatron Auto Seam Sealer Caulk, 550, Grey Color, Permanently Elastic, Fast-Skinning, Non-Staining, Non-Sagging, 12 oz
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Price-22% $16.55
List:$21.31
-17% $4.99
List:$5.99
-5% $21.79
List:$22.82
-10% $12.75
List:$14.17
-10% $18.00
List:$20.05
Delivery
Get it as soon as Sunday, Mar 31
Get it as soon as Sunday, Mar 31
Get it as soon as Sunday, Mar 31
Get it as soon as Sunday, Mar 31
Customer Ratings
Value for money
4.2
4.0
4.8
4.0
3.7
Easy to use
4.1
4.1
4.5
4.1
4.1
Adhesion
4.3
4.2
4.4
Sold By
Amazon.com
Amazon.com
Amazon.com
Amazon.com
Home Hardware Solutions
form
Paste
Oz
Paste
surface suggestion
Window
Metal
Metal, Wood, Glass
water resistance
waterproof
waterproof
waterproof
water resistant
waterproof
weight
12 ounces
9 grams
0.5 pounds
10.1 ounces
10.1 ounces

Important information

Legal Disclaimer

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. For additional product information, visit www.3M.com.


From the manufacturer

3M Dynatron Auto Seam Sealer Caulk 550

Dynatron Auto Seam Sealer Grey Caulk

Dynatron Auto Seam Sealer Grey Caulk is a fast-skinning, permanently elastic, non-sagging formulation that is brushable and paintable. This sealer provides excellent adhesion to bare metal or painted surfaces and is a non-staining, all-purpose autobody joint and seam sealer.

Versatile Seam Sealer

Sealer Caulk lay down well on both bare metal and painted surfaces. Offers high adhesion and has a thick consistency that makes it less likely to drip, sag or run out of the gap being sealed. It dries quickly with little shrinkage. Creates a water-tight repair that stay in place without cracking. Recommended applications include fresh welds, floor seams, trunk seams, drip rails, voids and gaps.

DETAILS:

  • Brushable and paintable consistency makes applications easy
  • High adhesion works on both bare metal and painted surfaces
  • Fast skinning starts in about 10 to 15 minutes
  • Non-sagging formula keeps seam sealer in place
  • Non-staining

Easy to Use with Fast Results Our seam sealer formula can be brushed or painted on with exceptionally high quality results. When desired, it can be feathered out to a thin layer. The sealer starts to skin in about 10 to 15 minutes and should be fully hard by the next day.

Benefits of Seam Sealer Applying seam sealer can fill gaps and voids that otherwise could lead to water intrusion and eventual corrosion and rust. Seam sealer can also block moisture intrusion that can result in mildew and mold growth in certain areas.

Product Description

"Dynatron™ Auto Seam Sealer Caulk 550 is a fast-skinning, permanently elastic, non-sagging formulation that is brushable and paintable. This sealer provides excellent adhesion to bare metal or painted surfaces and is a non-staining, all-purpose autobody joint and seam sealer. Cure Time: 24 Hours Handling Time: 10-20 Minutes Work Time: 10 Minutes".

Product information

Technical Details

Additional Information

Warranty & Support

Amazon.com Return Policy:Amazon.com Voluntary 30-Day Return Guarantee: You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way. You can find out more about the exceptions and conditions here.
Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

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3M Dynatron Auto Seam Sealer Caulk, 550, Grey Color, Permanently Elastic, Fast-Skinning, Non-Staining, Non-Sagging, 12 oz


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What's in the box

  • Dynatron 550 Auto Seam Sealer Grey Caulk - 12 oz.
  • Looking for specific info?

    Customer reviews

    4.6 out of 5 stars
    4.6 out of 5
    1,225 global ratings

    Customers say

    Customers like the performance, quality and ease of use of the sealant. For example, they mention that it works well, it dries quickly and is easy to apply. Customers are also impresseded with the value, saying that it's a great product for the money.

    AI-generated from the text of customer reviews

    101 customers mention93 positive8 negative

    Customers are satisfied with the performance of the sealant. They mention that it works well, is easy to apply, and lasts for 1-3 years. Some say that it is great for replacing old, dried up sealer. Overall, customers are happy with the product's performance and recommend it to others.

    "...It flows easily from the cartridge and is workable. The excess peels are easily too." Read more

    "Product applied as expected. A little more difficult to tool than a caulk you may use in your home, but pretty easy to apply...." Read more

    "nice and safe in the box big enough to hold a large dog. plenty of mega bubblr wrap, thanks, guys" Read more

    "used this to fill seems on my b5 a4 rebuild works well and looks exactly like the oem stuff" Read more

    57 customers mention48 positive9 negative

    Customers like the quality of the sealant. For example, they say it's a high-quality sealant, works well for sealing seams and bunghole cracks, and it holds up well. That said, some say they have no problem with the tube collapsing.

    "Great Seam Sealer, applies smoothly, odor is not too bad at all. It does have fibrous content in it, so it can only be smoothed out so much...." Read more

    "It is a high-quality sealant. it remains flexible and dries well. It flows easily from the cartridge and is workable. The excess peels are easily too." Read more

    "Did some seam seal patching on the roof rails. No leaks so far!" Read more

    "...I found this product and 9+ months later it's still holding up good! I was able to paint over it as well. Definitely worth the money." Read more

    33 customers mention28 positive5 negative

    Customers find the sealant easy to use and apply. They say it goes on smoothly and sands down nicely. Customers also mention that it's convenient when trying to seal, and it'll harden when it dries.

    "Great Seam Sealer, applies smoothly, odor is not too bad at all. It does have fibrous content in it, so it can only be smoothed out so much...." Read more

    "Easy to use" Read more

    "...It went down easy and dried quickly. Paint went on with out a hitch." Read more

    "...not cheaper than other seam sealer‘s on the market, this stuff is convenient when trying to seal something quickly and not having to worry about..." Read more

    20 customers mention16 positive4 negative

    Customers like the value of the sealant. They mention it's a great product for the money, easy to use, and well worth the price. Some say that the product is not cheap, but performs well.

    "...I was able to paint over it as well. Definitely worth the money." Read more

    "...It's a bit pricey, but it's well worth it. Highly recommend." Read more

    "Worked great and went a long way. Best price. Will order again." Read more

    "Good product, and price, couldn't get the right stuff at the right price , in town.." Read more

    19 customers mention15 positive4 negative

    Customers like the drying time of the sealant. They mention that it works great, dries quickly, and is easy to apply. Some say that it driers to a hard rubbery consistency and is perfectly clear.

    "...It dries very quickly too, so you do have to work fast. Overall it seems to do a great job" Read more

    "It is a high-quality sealant. it remains flexible and dries well. It flows easily from the cartridge and is workable. The excess peels are easily too." Read more

    "Easily applied to the project dries quickly" Read more

    "...it is very messy, gets tacky very quickly, shrinks a lot, and does not dry as hard as I would like...." Read more

    11 customers mention8 positive3 negative

    Customers like the stability of the sealant. They say it adheres well, stays in place, and does not crack.

    "...Paint seems to adhere well.Will need a year or more to assess durability." Read more

    "The product stayed in place, with no sagging, when filling gaps in the trunk of my classic car...." Read more

    "...The two stamped steel parts of the hood were just not glued together to my satisfaction. This seam sealer has solved that issue...." Read more

    "...This product adheres to the metal & remains slightly flexible after it dries (like an elastomeric caulk) so it won’t crack away from the metal as..." Read more

    10 customers mention10 positive0 negative

    Customers like the paintability of the sealant. They say it skims over very quickly, is ready for paint in only 30 minutes, and accepts paint no problem. It skins fast, and is hard the next morning.

    "...It went down easy and dried quickly. Paint went on with out a hitch." Read more

    "...it, work VERY FAST.... it skims over VERY quickly.... says paintable in only 30 minutes!..." Read more

    "...Quick curing as well.It has lasted for several months and no problems." Read more

    "...Able to paint after 24 hours and accepted paint really well...." Read more

    10 customers mention7 positive3 negative

    Customers like the smoothness of the sealant. They mention that it works great, smooths easily, and is easy to apply and paint.

    "Smooth finish and doesn’t shrink back after it dries. Looks the same after it dries as when you first lay it down." Read more

    "This stuff is amazing, I like my seams smooth...." Read more

    "...It does have fibrous content in it, so it can only be smoothed out so much. It dries very quickly too, so you do have to work fast...." Read more

    "...It went on really nice and smooth and feathers out nice and thin if you use your finger...." Read more

    No more leaks!
    5 Stars
    No more leaks!
    Did some seam seal patching on the roof rails. No leaks so far!
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    Top reviews from the United States

    Reviewed in the United States on March 15, 2024
    Size: 12 FL OZColor: GreyVerified Purchase
    One person found this helpful
    Report
    Reviewed in the United States on February 27, 2024
    Size: 12 FL OZColor: GreyVerified Purchase
    Reviewed in the United States on February 15, 2023
    Size: 12 FL OZColor: GreyVerified Purchase
    2 people found this helpful
    Report
    Reviewed in the United States on December 2, 2023
    Size: 12 FL OZColor: GreyVerified Purchase
    One person found this helpful
    Report
    Reviewed in the United States on March 15, 2024
    Size: 12 FL OZColor: GreyVerified Purchase
    Customer image
    5.0 out of 5 stars No more leaks!
    Reviewed in the United States on March 15, 2024
    Did some seam seal patching on the roof rails. No leaks so far!
    Images in this review
    Customer image
    Customer image
    Reviewed in the United States on March 6, 2024
    Size: 12 FL OZColor: GreyVerified Purchase
    One person found this helpful
    Report
    Reviewed in the United States on February 21, 2024
    Size: 12 FL OZColor: GreyVerified Purchase
    One person found this helpful
    Report
    Reviewed in the United States on February 27, 2024
    Size: 12 FL OZColor: GreyVerified Purchase

    Top reviews from other countries

    Phil G.
    1.0 out of 5 stars Didn't stick patches securely on truck for body work!
    Reviewed in Canada on September 18, 2022
    Size: 10 OunceColor: WhiteVerified Purchase
    One person found this helpful
    Report
    Greg
    5.0 out of 5 stars great OEM quality product
    Reviewed in Canada on June 18, 2015
    Size: 1/10 galColor: TanVerified Purchase