--- product_id: 8806151 title: "Dynatron Auto Seam Sealer Caulk, 550, Grey Color, Permanently Elastic, Fast-Skinning, Non-Staining, Non-Sagging, 12 oz" brand: "3m" price: "R1063" currency: ZAR in_stock: true reviews_count: 8 category: "3 M" url: https://www.desertcart.co.za/products/8806151-dynatron-auto-seam-sealer-caulk-550-grey-color-permanently-elastic store_origin: ZA region: South Africa --- # Brushable & paintable Fast skinning in 10-15 mins 12 oz weight Dynatron Auto Seam Sealer Caulk, 550, Grey Color, Permanently Elastic, Fast-Skinning, Non-Staining, Non-Sagging, 12 oz **Brand:** 3m **Price:** R1063 **Availability:** βœ… In Stock ## Summary > Seal the Deal! πŸ› οΈ ## Quick Answers - **What is this?** Dynatron Auto Seam Sealer Caulk, 550, Grey Color, Permanently Elastic, Fast-Skinning, Non-Staining, Non-Sagging, 12 oz by 3m - **How much does it cost?** R1063 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/8806151-dynatron-auto-seam-sealer-caulk-550-grey-color-permanently-elastic) ## 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€’ **Stays Put:** Designed to resist sagging and dripping, ensuring a clean and professional finish. - β€’ **Quick Drying:** Enjoy fast skinning in just 10-15 minutes, keeping your projects on schedule. - β€’ **Unmatched Adhesion:** Achieve high adhesion on both bare metal and painted surfaces for versatile use. - β€’ **Non-Staining Formula:** Perfect for all-purpose autobody joint and seam sealing without the mess. - β€’ **Seamless Application:** Experience effortless sealing with a brushable and paintable consistency. ## Overview The 3MDynatron Auto Seam Sealer Caulk is a 12 oz, permanently elastic sealing solution designed for industrial use. Its grey silicone and rubber composition ensures high adhesion on metal surfaces, with a quick skinning time of 10-15 minutes. This non-staining, waterproof caulk is perfect for achieving a professional finish without the hassle of sagging or dripping. ## 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: 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. ## 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 sale or use. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B005RNFBMC | | Best Sellers Rank | #54,499 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #162 in Adhesive Caulk #294 in Industrial Sealants #26,090 in Hardware | | Brand Name | 3M | | Color | Grey | | Customer Reviews | 4.6 4.6 out of 5 stars (1,138) | | 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 Type Name | 3M Dynatron Auto Seam Sealer Caulk | | Item Weight | 12 Ounces | | Liquid Volume | 12 Fluid Ounces | | Manufacturer | 3M | | Material Type | Rubber, Silicone | | Surface Recommendation | Metal | | UPC | 076308005504 | | Unit Count | 12.0 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 ![Dynatron Auto Seam Sealer Caulk, 550, Grey Color, Permanently Elastic, Fast-Skinning, Non-Staining, Non-Sagging, 12 oz - Image 1](https://m.media-amazon.com/images/I/61IK8-3wAIL.jpg) ![Dynatron Auto Seam Sealer Caulk, 550, Grey Color, Permanently Elastic, Fast-Skinning, Non-Staining, Non-Sagging, 12 oz - Image 2](https://m.media-amazon.com/images/I/61p8iDP+ITL.jpg) ![Dynatron Auto Seam Sealer Caulk, 550, Grey Color, Permanently Elastic, Fast-Skinning, Non-Staining, Non-Sagging, 12 oz - Image 3](https://m.media-amazon.com/images/I/61xEVsrlgTL.jpg) ![Dynatron Auto Seam Sealer Caulk, 550, Grey Color, Permanently Elastic, Fast-Skinning, Non-Staining, Non-Sagging, 12 oz - Image 4](https://m.media-amazon.com/images/I/61+Hg-2bfEL.jpg) ![Dynatron Auto Seam Sealer Caulk, 550, Grey Color, Permanently Elastic, Fast-Skinning, Non-Staining, Non-Sagging, 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! ### ⭐⭐⭐⭐⭐ Applies smoothly, dries-stays flexible, easy to work-with *by J***N on February 27, 2024* 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. ### ⭐⭐⭐⭐⭐ 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. ## 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.co.za/products/8806151-dynatron-auto-seam-sealer-caulk-550-grey-color-permanently-elastic](https://www.desertcart.co.za/products/8806151-dynatron-auto-seam-sealer-caulk-550-grey-color-permanently-elastic) --- *Product available on Desertcart South Africa* *Store origin: ZA* *Last updated: 2026-05-31*