--- product_id: 2594746 title: "14 oz, 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: "€ 38.28" currency: EUR in_stock: true reviews_count: 13 category: "Flex Seal" url: https://www.desertcart.at/products/2594746-14-oz-black-stop-leaks-instantly-waterproof-rubber-spray-on store_origin: AT region: Austria --- # 100% waterproof & flexible Heat & cold resistant 14 oz spray-on sealant 14 oz, 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:** € 38.28 **Availability:** ✅ In Stock ## Summary > 💧 Seal it. Protect it. Flex it. The ultimate fix for leaks that won’t quit. ## Quick Answers - **What is this?** 14 oz, 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?** € 38.28 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.at](https://www.desertcart.at/products/2594746-14-oz-black-stop-leaks-instantly-waterproof-rubber-spray-on) ## 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 - • **Paintable Finish:** Customize your repair with any color once dry—blend seamlessly with your home or gear. - • **Instant Leak Stopper:** Sprays on easily to seal cracks and holes fast, saving your projects from water damage. - • **All-Weather Protection:** Withstands extreme heat and freezing cold without sagging or losing adhesion. - • **Multi-Surface Versatility:** Perfect for gutters, roofs, wood, RVs, windows, and even creative DIY projects. - • **Flexible Rubberized Coating:** Dries to a durable, pliable layer that moves with surfaces—no cracking or peeling, year-round. ## Overview Flex Seal is a 14 oz black spray-on rubberized sealant designed to instantly stop leaks and waterproof surfaces. It forms a flexible, durable coating that resists cracking, peeling, and weather extremes, making it ideal for gutters, roofs, wood, RVs, and more. Paintable and easy to apply, it’s a trusted solution with over 38,000 positive reviews and a #1 rank in hardware sealers. ## Description Flex Seal, 14 oz, Black, Stop Leaks Instantly, Waterproof Rubber Spray On Sealant Coating, Perfect for Gutters, Wood, RV, Campers, Roof Repair, Skylights, Windows, and More - Deck Waterproof Sealants - desertcart.com Review: Good Product - Flex Seal Works Great - Flex Seal is great quality. It comes ready to use so mixability is easy to get started. It's a great price. The Flex Seal is very durable, looks great and clean up is easy so removal is easy. The product seems sturdy. Review: Great for waterproofing wood! - This stuff works. Sprayed a piece of plywood and has kept it dry. ## 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; lasts many years - Transform and protect virtually everything! Ideal for arts & crafts, projects & hobbies - Protects surface from corrosion, can be used on wet or dry surfaces - Will not sag or drip in the Summer heat. Will not crack or peel in the Winter cold ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00CD9FGNW | | Best Sellers Rank | #108 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1 in Hardware Sealers | | Brand Name | Flex Seal | | Color | Black | | Compatible Material | Rubber | | Customer Reviews | 4.4 4.4 out of 5 stars (38,791) | | Global Trade Identification Number | 00855647003019 | | Included Components | Flex Seal Spray Rubber Sealant Coating, 14-oz, Black | | Item Dimensions | 9.5 x 2.5 x 2.5 inches | | Item Form | Spray | | Item Type Name | Flex Seal Spray Rubber Sealant Coating, 14-oz, Black | | Item Weight | 14 Ounces | | Manufacturer | Swift Response, LLC | | Material Type | Plastic | | Model | FLEX SEAL - FSR20 | | Number of Items | 1 | | Part Number | FSR20 | | Style Name | Black, 14 oz, 1-Pack | | Surface Recommendation | Roof,Windows,Wood | | UPC | 855647003019 | | Unit Count | 28.0 Ounce | | Warranty Description | 1 Year Limited | | Water Resistance Level | Waterproof | ## Product Details - **Brand:** Flex Seal - **Item Weight:** 14 Ounces - **Item dimensions L x W x H:** 9.5 x 2.5 x 2.5 inches - **Material:** Plastic - **Style:** Black, 14 oz, 1-Pack ## Images ![14 oz, 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/71e9eU84KQL.jpg) ## Available Options This product comes in different **Color, Size** options. ## Questions & Answers **Q: The grout throughout the rim area between the glass and the metal frame of my glass windows has deteriorated and leaks. Will it seal this?** A: Hello, thank you for reaching out! Many people have had success using https://www.amazon.com/dp/B00OX6OU5S to seal their grout. **Q: I have a leak on my shower drain, would this work to seal the leak on PVC pipe?** A: Yes many people have had great success sealing their pipes with Flex Seal. **Q: Will flex seal work on concrete? I have a leak in my koi pond, would flex seal hold the leak while being underwater?** A: Yes many people have had great success using Flex Seal on concrete. We recommend using Flex Seal Liquid on your koi pond though since it is plant and animal safe. Flex Seal in the aerosol can is not animal safe. **Q: I have a couple of cracks in a plastic pond shell. Around 100 gallon pond. Would this seal them?** A: the tape might do the job--I sprayed on to a faux leather chair -- it's peeling off--I might get more tape seal.. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good Product - Flex Seal Works Great *by C***D on February 20, 2026* Flex Seal is great quality. It comes ready to use so mixability is easy to get started. It's a great price. The Flex Seal is very durable, looks great and clean up is easy so removal is easy. The product seems sturdy. ### ⭐⭐⭐⭐⭐ Great for waterproofing wood! *by A***S on March 28, 2026* This stuff works. Sprayed a piece of plywood and has kept it dry. ### ⭐⭐⭐⭐ It works fine *by C***R on March 9, 2026* Good product ..fit for purpose ## Frequently Bought Together - Flex Seal, 14 oz, Black, Stop Leaks Instantly, Waterproof Rubber Spray On Sealant Coating, Perfect for Gutters, Wood, RV, Campers, Roof Repair, Skylights, Windows, and More - Flex Tape, Original Thick Flexible Rubberized Waterproof Tape - Seal and Patch Leaks, Works Underwater, Indoor Outdoor - Home RV Roof Plumbing and Pool Repairs, Black, 4 in x 5 ft, Pack of 1 --- ## 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.at/products/2594746-14-oz-black-stop-leaks-instantly-waterproof-rubber-spray-on](https://www.desertcart.at/products/2594746-14-oz-black-stop-leaks-instantly-waterproof-rubber-spray-on) --- *Product available on Desertcart Austria* *Store origin: AT* *Last updated: 2026-04-22*