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(15576 ratings)
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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 1,220 ratings

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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.
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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
$22.11$20.23-8% $18.48
List:$20.05
Delivery
Get it as soon as Tuesday, Mar 19
Get it as soon as Tuesday, Mar 19
Get it as soon as Tuesday, Mar 19
Get it as soon as Tuesday, Mar 19
Customer Ratings
Value for money
4.2
4.8
4.0
3.7
Easy to use
4.1
4.5
4.1
4.2
Adhesion
4.3
4.2
4.4
Durability
4.2
4.7
Sold By
Amazon.com
Amazon.com
Amazon.com
Amazon.com
form
Paste
Oz
Paste
surface suggestion
Metal
Metal, Wood, Glass
liquid volume
10.1 fluid ounces
10.1 fluid ounces
water resistance
waterproof
waterproof
water resistant
waterproof
weight
12 ounces
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.

To report an issue with this product or seller, click here.

Top Brand: 3M

Highly Rated
4.5/5 star rating from 100K+ customer ratings
Trending
100K+ orders for this brand in past 3 months
Low Returns
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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
    1,220 global ratings

    Customers say

    Customers like the adhesion, quality, strength, value, and paintability of the sealant. For example, they mention that it sticks well, stays in place without cracking, and is well worth the price. As for the paintability, they're happy with smoothness, drying time, and ease of setting up.

    AI-generated from the text of customer reviews

    119 customers mention112 positive7 negative

    Customers are satisfied with the quality of the sealant. They mention that it works well, lasts for 1-3 years, and is easy to apply. It also works well to seal bunghole cracks, and reattach under hood supports. Overall, customers are happy with the product and recommend it to others.

    "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

    "...NO LEAKS TO WORRY ABOUT FOR DECADES TO COME.3M HAS A GREAT TRACK RECORD YOU CAN TRUST." Read more

    "...this any time we need to drill through the roof and it stops any leaks from ever forming. It's a bit pricey, but it's well worth it. Highly recommend." Read more

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

    33 customers mention27 positive6 negative

    Customers find the ease of setting up of the sealant to be a positive. They mention that it is easy to use and apply, and it looks great when it sets up. Customers also say that it works and sets up fast, and is fairly hard and paintable once it dries.

    "Easy to use" 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

    "it works and sets up fast" Read more

    "I liked the ease to apply the seam sealer. This sealer worked well." Read more

    21 customers mention17 positive4 negative

    Customers like the drying time of the sealant. They say it dries quickly, it's clear, and it skins fast. Some say it has lasted for several months with no problems.

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

    "...This did an amazing job and dried perfectly clear...." Read more

    20 customers mention15 positive5 negative

    Customers like the value of the sealant. They say it's a bit pricey, but well worth it.

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

    "not cheap - but works very well" Read more

    12 customers mention12 positive0 negative

    Customers are satisfied with the strength of the sealant. They mention that it works great, it won't crack away from the metal as the vehicle, and it has lasted for several months without any problems.

    "...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

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

    "...and has also remained pliable even after a couple weeks; has not hardened or become brittle at all." Read more

    "...slightly flexible after it dries (like an elastomeric caulk) so it won’t crack away from the metal as the vehicle heats & cools in the sun or flexes..." Read more

    10 customers mention8 positive2 negative

    Customers like the adhesion of the sealant. They mention that it adheres well and stays in place, with no sagging, when filling gaps in the trunk of their car.

    "...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

    "...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

    "...You have been warned. This stuff sticks to everything. It works but be careful." Read more

    8 customers mention8 positive0 negative

    Customers like the paint. They say it's fairly hard and paintable, it'll dry quickly, and it accepts paint no problem. Some customers also mention that it'd be ready for paint after 24 hours and that the paint went on with no hitch.

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

    "...The product worked great, dried quickly and accepted trunk paint and undercoating!" Read more

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

    "...Dries in a decent amount of time and ready for paint. Looks factory." Read more

    8 customers mention6 positive2 negative

    Customers like the smoothness of the sealant. They mention that it goes on smoothly, feathers out nice and thin, and is easy to work with. Some say that they like their seams smooth.

    "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

    "Really hard to work with. Could not smooth out at all, and started setting up almost immediately, creating a sticky mess...." Read more

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

    Good product; incomplete instructions(?)
    5 Stars
    Good product; incomplete instructions(?)
    Goes on easy, but if you are going to tool it, work VERY FAST.... it skims over VERY quickly.... says paintable in only 30 minutes! Wondering if the gent who left the 1-star review maybe pried the entire end off the bottom of the tube, which would weaken it (or if he got old, partially-dried-out tubes) The instructions are vague - only says to "Remove end seal at the bottom of the tube", and unfortunately they didn't provide a pull-tab, nor any indication of how to do that. I punctured it with a small screwdriver then pried the snap-out seal, leaving the metal ring attached to the tube for strength (see photo). I had no problem with the tube collapsing, even using it in my electric caulk-gun.
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    Top reviews from the United States

    Reviewed in the United States on February 27, 2024
    Size: 12 FL OZColor: GreyVerified Purchase
    Reviewed in the United States on October 30, 2023
    Size: 12 FL OZColor: GreyVerified Purchase
    One person found this helpful
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    Reviewed in the United States on August 16, 2023
    Size: 12 FL OZColor: GreyVerified Purchase
    One person found this helpful
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    Reviewed in the United States on December 2, 2023
    Size: 12 FL OZColor: GreyVerified Purchase
    One person found this helpful
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    Reviewed in the United States on March 6, 2024
    Size: 12 FL OZColor: GreyVerified Purchase
    Reviewed in the United States on February 21, 2024
    Size: 12 FL OZColor: GreyVerified Purchase
    Reviewed in the United States on February 29, 2024
    Size: 12 FL OZColor: GreyVerified Purchase
    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