--- product_id: 530355114 title: "Flex Seal MAX, 17 oz, 2-Pack, Black, Stop Leaks Instantly, Waterproof Rubber Spray On Sealant Coating, Perfect for Gutters, Wood, RV, Campers, Roof Repair, Skylights, Windows, and More" brand: "flex seal" price: "£37.38" currency: GBP in_stock: true reviews_count: 13 category: "Flex Seal" url: https://www.desertcart.co.uk/products/530355114-flex-seal-max-17-oz-2-pack-black-stop-leaks store_origin: GB region: United Kingdom --- # Instant waterproof seal Heat & cold resistant Flexible rubber coating Flex Seal MAX, 17 oz, 2-Pack, Black, Stop Leaks Instantly, Waterproof Rubber Spray On Sealant Coating, Perfect for Gutters, Wood, RV, Campers, Roof Repair, Skylights, Windows, and More **Brand:** flex seal **Price:** £37.38 **Availability:** ✅ In Stock ## Summary > 💪 Seal it. Protect it. Flex your fix like a pro. ## Quick Answers - **What is this?** Flex Seal MAX, 17 oz, 2-Pack, Black, Stop Leaks Instantly, Waterproof Rubber Spray On Sealant Coating, Perfect for Gutters, Wood, RV, Campers, Roof Repair, Skylights, Windows, and More by flex seal - **How much does it cost?** £37.38 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/530355114-flex-seal-max-17-oz-2-pack-black-stop-leaks) ## Best For - flex seal enthusiasts ## Why This Product - Trusted flex seal brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Durable flexibility that lasts:** Stays pliable year-round—no cracking, peeling, or sagging in extreme weather. - • **Versatile surface compatibility:** Works on wood, metal, glass, vinyl, and more—perfect for all your repair projects. - • **Seal leaks instantly and effortlessly:** Spray-on formula seeps into cracks for a watertight barrier in seconds. - • **Paintable finish for seamless blending:** Once dry, customize with any color to match your style or décor. - • **Trusted by thousands with 4.4-star rating:** Top-rated sealant with proven durability and easy cleanup. ## Overview Flex Seal MAX is a powerful, waterproof rubber spray sealant designed to stop leaks instantly and protect a wide range of surfaces. Its flexible, durable coating withstands extreme temperatures without cracking or peeling, making it ideal for gutters, roofs, wood, RVs, and more. Ready to use and paintable, this 2-pack offers professional-grade sealing with effortless application and long-lasting results. ## Description Product description Coats, seals, and protects. Sprays out as a liquid that seeps into holes and cracks, then dries to form a watertight, flexible, rubberized coating. Shields against rust and corrosion. Great for auto repairs and restorations. Extends the life of vehicles by providing an added layer of protection. Works indoors and outdoors. Won’t sag or drip in summer heat nor crack and peel in winter, making it exceptional for weatherizing your home. Apply to almost any surface. Use on: wood, metal, tile, concrete, masonry, fabric, glass, plastic, aluminum, drywall, and more. Fully paintable. After repairs are done, simply paint the color of your choice for fixes that are virtually undetectable. Made in the USA Flex Seal spray is proudly made in America, using globally sourced products. DIRECTIONS Make sure the surface is clean, dry, and free of grease, oil, and dirt. Shake well. Spray 8” to 12” from surface, using an even, sweeping motion. Apply multiple, even coats until ALL cracks and holes have been filled. Let it dry completely. (It usually takes up to 24 to 48 hours to fully cure.) Important information: *If the product you received is not our newest can design, don’t sweat it. It’s the same legendary formula. Review: Black stuff - Works just as advertised. Excellent product. Review: Works great! - Used to seal bolts holding on my cheap metal shed roof, no leaks now. ## Features - The easy way to coat, seal, protect, and stop leaks fast! Once dry, can be painted any color. - Seeps into cracks and holes. Dries to a watertight, flexible, rubberized coating. Stays flexible and pliable and lasts many years. - Transform and protect virtually everything! Ideal for arts & crafts, projects & hobbies. - Will not sag or drip in the Summer heat. Will not crack or peel in the Winter cold. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0C44CXPZ7 | | Best Sellers Rank | #125 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1 in Hardware Sealers | | Brand | Flex Seal | | Brand Name | Flex Seal | | Color | Black | | Compatible Material | Aluminum, Asphalt, Concrete, Glass, Metal, Plastic, Polyvinyl Chloride, Porcelain, Rubber, Vinyl, Wood | | Customer Reviews | 4.4 out of 5 stars 38,975 Reviews | | Item Dimensions | 11 x 6 x 3 inches | | Item Form | Liquid, Spray | | Item Weight | 17 Ounces | | Item dimensions L x W x H | 11 x 6 x 3 inches | | Manufacturer | Flex Seal | | Material | Rubber | | Material Type | Rubber | | Number of Items | 2 | | Part Number | FSMAXBLK24-2PK | | Style | MAX, 2 Pack - Black, 17 oz. | | Style Name | MAX, 2 Pack - Black, 17 oz. | | Surface Recommendation | Roof,Windows,Wood | | UPC | 810129870329 | | Unit Count | 2.0 Count | | Water Resistance Level | Waterproof | ## Product Details - **Brand:** Flex Seal - **Item Weight:** 17 Ounces - **Item dimensions L x W x H:** 11 x 6 x 3 inches - **Material:** Rubber - **Style:** MAX, 2 Pack - Black, 17 oz. ## Images ![Flex Seal MAX, 17 oz, 2-Pack, Black, Stop Leaks Instantly, Waterproof Rubber Spray On Sealant Coating, Perfect for Gutters, Wood, RV, Campers, Roof Repair, Skylights, Windows, and More - Image 1](https://m.media-amazon.com/images/I/81G-tt7GQNL.jpg) ![Flex Seal MAX, 17 oz, 2-Pack, Black, Stop Leaks Instantly, Waterproof Rubber Spray On Sealant Coating, Perfect for Gutters, Wood, RV, Campers, Roof Repair, Skylights, Windows, and More - Image 2](https://m.media-amazon.com/images/I/81CayjeHyGL.jpg) ![Flex Seal MAX, 17 oz, 2-Pack, Black, Stop Leaks Instantly, Waterproof Rubber Spray On Sealant Coating, Perfect for Gutters, Wood, RV, Campers, Roof Repair, Skylights, Windows, and More - Image 3](https://m.media-amazon.com/images/I/91-L9c4NuYL.jpg) ![Flex Seal MAX, 17 oz, 2-Pack, Black, Stop Leaks Instantly, Waterproof Rubber Spray On Sealant Coating, Perfect for Gutters, Wood, RV, Campers, Roof Repair, Skylights, Windows, and More - Image 4](https://m.media-amazon.com/images/I/81detodB6vL.jpg) ![Flex Seal MAX, 17 oz, 2-Pack, Black, Stop Leaks Instantly, Waterproof Rubber Spray On Sealant Coating, Perfect for Gutters, Wood, RV, Campers, Roof Repair, Skylights, Windows, and More - Image 5](https://m.media-amazon.com/images/I/81nI1EyD-XL.jpg) ## Available Options This product comes in different **Color, Size** options. ## Questions & Answers **Q: Will flexseal fix an oil leak** A: It’s sealed water leaks in my basement pipes so I’m sure oil would be easy enough but I suggest you clean the surface thoroughly so that the bonding is complete before you spray ## Customer Reviews ### ⭐⭐⭐⭐⭐ Black stuff *by D***S on April 19, 2026* Works just as advertised. Excellent product. ### ⭐⭐⭐⭐⭐ Works great! *by W***D on April 24, 2026* Used to seal bolts holding on my cheap metal shed roof, no leaks now. ### ⭐⭐⭐⭐ It works fine *by C***R on March 9, 2026* Good product ..fit for purpose ## Frequently Bought Together - Flex Seal 2-Pack Black 17oz Stop Leaks Instantly, Waterproof Sealant Coating For Gutters, RV, Roof, Skylights, Windows - Flex Seal Liquid, 16 oz, Black, Liquid Rubber Coating Sealant, Waterproof, Flexible, Breathable, and UV Resistant, Roof Repair, Basements, RV, Campers, Trailers, Marine, EPDM, Masonry --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/530355114-flex-seal-max-17-oz-2-pack-black-stop-leaks](https://www.desertcart.co.uk/products/530355114-flex-seal-max-17-oz-2-pack-black-stop-leaks) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-16*