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3M Dynatron Auto Seam Sealer Caulk 550 is a professional-grade, fast-skinning, brushable, and paintable seam sealer designed for autobody applications. It offers excellent adhesion to both bare metal and painted surfaces, cures fully in 24 hours, and features a non-sagging, non-staining, permanently elastic formula that ensures durable, waterproof seals.
| ASIN | B005RNFBMC |
| Best Sellers Rank | #70,231 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #196 in Adhesive Caulk #405 in Industrial Sealants #31,668 in Hardware |
| Brand | 3M |
| Brand Name | 3M |
| Color | Grey |
| Customer Reviews | 4.6 out of 5 stars 1,144 Reviews |
| Full Cure Time | 24 hours |
| Global Trade Identification Number | 00076308005504 |
| Included Components | Dynatron 550 Auto Seam Sealer Grey Caulk - 12 oz. |
| Initial Hardening Time | 15 minutes |
| Item Form | Paste |
| Item Highlight | Permanently Elastic; Non-Staining; Non-Sagging |
| Item Type Name | 3M Dynatron Auto Seam Sealer Caulk |
| Item Weight | 12 ounces |
| Liquid Volume | 12 fluid ounces |
| Manufacturer | 3M |
| Material Type | Rubber, Silicone |
| Model | 550 |
| Number of Items | 1 |
| Part Number | 550 |
| Surface Recommendation | Metal |
| UPC | 076308005504 |
| Unit Count | 12 Ounce |
| Warranty Description | As labelled |
| Water Resistance Level | Waterproof |
L**.
Cheap, easy to work with.
Seems like good value for the money. I was applying to the underside of my car so it was important that it didn't run, which it didn't. Was very easy to work with. Stuck to the car without sticking to my glove too much while applying.
D**E
Old school goodness!
Quality 3 m product. Dries quickly, flexible, tough. Not sandable.
N**E
Did its job!
My husband bought this for his floor pans he welded in! Good value for the money, good quality, not sticky, smooth, looks good, and great sealability! He was pleased!
C**D
ok
Ok
J**N
Applies smoothly, dries-stays flexible, easy to work-with
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.
W**M
Great stuff
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. It dries very quickly too, so you do have to work fast. Overall it seems to do a great job
U**Y
The one thing that actually worked
I had a small leak somewhere in my trunk and used various other products to try to stop it from leaking but none worked. Sometimes they would stop it for one day or a few days but it always started leaking again. 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.
R**.
Does the job to seal leaks
Used this to seal some weld seams on my truck that were leaking. Applies with good consistency, dries pretty quick and can be painted to match if you wish. Does the job well!
Trustpilot
5 days ago
1 week ago