--- product_id: 8806151 title: "3M Dynatron Auto Seam Sealer Caulk, 550, Grey Color, Fast-Skinning, 12 oz" brand: "3m" price: "S$61" currency: SGD in_stock: true reviews_count: 8 category: "3 M" url: https://www.desertcart.sg/products/8806151-3m-dynatron-auto-seam-sealer-caulk-550-grey-color-fast store_origin: SG region: Singapore --- # Waterproof & non-sagging formula Fast skinning in 10-15 mins High adhesion on metal & paint 3M Dynatron Auto Seam Sealer Caulk, 550, Grey Color, Fast-Skinning, 12 oz **Brand:** 3m **Price:** S$61 **Availability:** βœ… In Stock ## Summary > πŸš— Seal it fast, seal it right β€” the pro’s choice for flawless auto seams! ## Quick Answers - **What is this?** 3M Dynatron Auto Seam Sealer Caulk, 550, Grey Color, Fast-Skinning, 12 oz by 3m - **How much does it cost?** S$61 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/8806151-3m-dynatron-auto-seam-sealer-caulk-550-grey-color-fast) ## Best For - 3m enthusiasts ## Why This Product - Trusted 3m brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Superior Adhesion:** Bonds seamlessly to both bare metal and painted surfaces for lasting durability - β€’ **Trusted 3M Quality:** Backed by a 4.6-star rating and decades of industrial reliability - β€’ **Rapid Initial Hardening:** Starts setting in just 10-15 minutes to keep your project moving - β€’ **Non-Sagging & Drip-Resistant:** Stays put in gaps and seams without mess or run-off - β€’ **Brushable & Paintable Consistency:** Effortless application for a flawless finish every time ## Overview 3M Dynatron Auto Seam Sealer Caulk 550 is a 12 oz grey, fast-skinning, brushable, and paintable sealant designed for autobody joints and seams. It offers excellent adhesion to bare metal and painted surfaces, cures fully in 24 hours, and resists sagging and dripping. Waterproof and non-staining, it’s a trusted industrial-grade solution favored by professionals for durable, clean, and long-lasting seals. ## Description "Dynatronβ„’ 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". Review: 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! Review: WORKS FINE - USED IN RESTORATION WORK ON CLASSIC CAR, REMOVED OLD SEALER FROM WELD AND BOLT TOGETHER SEAMS ON FENDERS AND TRUNK WITH SCRAPPER AND WIRE BRUSHING. WENT ON SMOOTHLY AND FILLED SEAMS USING HAND CALKING GUN, NO PROBLEMS. NO LEAKS TO WORRY ABOUT FOR DECADES TO COME. 3M HAS A GREAT TRACK RECORD YOU CAN TRUST. ## Features - 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 use. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B005RNFBMC | | Best Sellers Rank | #49,823 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #156 in Adhesive Caulk #311 in Industrial Sealants #23,897 in Hardware | | Brand | 3M | | Brand Name | 3M | | Color | Grey | | Customer Reviews | 4.6 out of 5 stars 1,143 Reviews | | Full Cure Time | 24 hours | | Included Components | Dynatron 550 Auto Seam Sealer Grey Caulk - 12 oz. | | Initial Hardening Time | 15 minutes | | Item Form | Paste | | 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 | ## Product Details - **Brand:** 3M - **Color:** Grey - **Full Cure Time:** 24 hours - **Item Weight:** 12 ounces - **Liquid Volume:** 12 fluid ounces ## Images ![3M Dynatron Auto Seam Sealer Caulk, 550, Grey Color, Fast-Skinning, 12 oz - Image 1](https://m.media-amazon.com/images/I/61IK8-3wAIL.jpg) ![3M Dynatron Auto Seam Sealer Caulk, 550, Grey Color, Fast-Skinning, 12 oz - Image 2](https://m.media-amazon.com/images/I/61p8iDP+ITL.jpg) ![3M Dynatron Auto Seam Sealer Caulk, 550, Grey Color, Fast-Skinning, 12 oz - Image 3](https://m.media-amazon.com/images/I/61xEVsrlgTL.jpg) ![3M Dynatron Auto Seam Sealer Caulk, 550, Grey Color, Fast-Skinning, 12 oz - Image 4](https://m.media-amazon.com/images/I/61+Hg-2bfEL.jpg) ![3M Dynatron Auto Seam Sealer Caulk, 550, Grey Color, Fast-Skinning, 12 oz - Image 5](https://m.media-amazon.com/images/I/71mZM2MbpNL.jpg) ## Available Options This product comes in different **Color, Size** options. ## Questions & Answers **Q: Is this safe to apply to bare metal or should the surface be primed first?** A: Clean bare metal is fine. **Q: What is the recommended ambient temperature range for applying this seam sealer?** A: I use it between 50 and 90. Near 90 it almost skins too fast. I smooth it out with mineral spirits on a finger. **Q: is it paintable?** A: It says it's paintable, but I have not tried to paint it. **Q: Can I fill a vertical seam without it running? Is it thick enough to stay in place on a vertical panel?** A: Absolutely, vertical application can be applied. I did it. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Did its job! *by N***E on July 9, 2025* 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! ### ⭐⭐⭐⭐⭐ WORKS FINE *by J***S on October 30, 2023* USED IN RESTORATION WORK ON CLASSIC CAR, REMOVED OLD SEALER FROM WELD AND BOLT TOGETHER SEAMS ON FENDERS AND TRUNK WITH SCRAPPER AND WIRE BRUSHING. WENT ON SMOOTHLY AND FILLED SEAMS USING HAND CALKING GUN, NO PROBLEMS. NO LEAKS TO WORRY ABOUT FOR DECADES TO COME. 3M HAS A GREAT TRACK RECORD YOU CAN TRUST. ### ⭐⭐⭐⭐⭐ Does the job to seal leaks *by R***. on April 18, 2024* 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! ## Frequently Bought Together - 3M Dynatron Auto Seam Sealer Caulk, 550, Grey Color, Permanently Elastic, Fast-Skinning, Non-Staining, Non-Sagging, 12 oz - Seymour 20-1675 PBE Professional Primer, Self Etching/Weld Through Gray - 3M Professional Grade Rubberized Undercoating, Corrosion, Water and Salt Spray Resistant, 03584, 16 oz. Aerosol --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sg/products/8806151-3m-dynatron-auto-seam-sealer-caulk-550-grey-color-fast](https://www.desertcart.sg/products/8806151-3m-dynatron-auto-seam-sealer-caulk-550-grey-color-fast) --- *Product available on Desertcart Singapore* *Store origin: SG* *Last updated: 2026-08-23*