--- product_id: 735824543 title: "Crack Flex Sealant, 10.1-Oz. -515306" brand: "sika" price: "€ 4846.37" currency: EUR in_stock: true reviews_count: 5 url: https://www.desertcart.pt/products/735824543-crack-flex-sealant-10-1-oz-515306 store_origin: PT region: Portugal --- # 100% waterproof seal Self-leveling for seamless finish Premium polyurethane formula Crack Flex Sealant, 10.1-Oz. -515306 **Brand:** sika **Price:** € 4846.37 **Availability:** ✅ In Stock ## Summary > 🛡️ Seal the cracks, secure your space—don’t let damage sneak in! ## Quick Answers - **What is this?** Crack Flex Sealant, 10.1-Oz. -515306 by sika - **How much does it cost?** € 4846.37 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/735824543-crack-flex-sealant-10-1-oz-515306) ## Best For - sika enthusiasts ## Why This Product - Trusted sika brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Effortless Application:** Compact cartridge fits standard caulking guns—no extra tools needed thanks to self-leveling technology. - • **Ultimate Crack Defense:** Seals and protects concrete surfaces with a durable, flexible polyurethane formula. - • **Trusted American Quality:** Made in the USA with top-tier materials, backed by thousands of 4.6-star reviews. - • **Seamless Pavement Harmony:** Specially textured to blend naturally with concrete for a professional finish. - • **Waterproof & Weatherproof:** Provides long-lasting protection against water damage and surface wear. ## Overview Sikaflex Crack Flex Sealant is a premium-grade, one-component polyurethane sealant designed for concrete and cement surfaces. It offers waterproof, flexible, and durable protection with a self-leveling formula that requires no additional tools. Ideal for driveways, walkways, balconies, and stairs, this American-made sealant ensures a seamless, long-lasting finish that blends naturally with pavement textures. ## Description If you have cracks or gaps on driveways, walkways, balconies, stairs, or any other concrete or cement surface, the Sikaflex Crack Flex Sealant is the solution you need. This is a one-component premium grade polyurethane sealant that provides waterproof protection and long lasting durability once cured. Simply insert the compact cartridge into a standard caulking gun and you're ready to go. Sealants are self-leveling so no tools are required to download or mold into cracks. It is also specially textured to make it more harmonious with the pavement. The sealant is highly resilient to allow movement, prevents tearing and seals longer Review: Good product although a little expensive for the application Review: The gray water tank on my class A RV was smelling terrible. It was getting inside the living area and making everything smell terrible. I couldn’t find a leak anywhere. When I looked at all the connections and the tank, the only thing I could find was how this pipe went into the top of the tank, there was no rubber connection with clamps. That seemed very suspicious to me. It just appeared to be stuck into the top of the tank, and sealed in there with what appeared to be plumbers putty. I called the manufacturer and asked if this was how it was supposed to be. I would purchase a rubber connection if it was available. They said they are still doing it this way and if they have a problem to use a Sikaflex gray compound. I purchased a tube, and although the pipe comes out of the top of the tank I used the self leveling compound. I started applying it above the suspect area and let it flow down over the existing stuff and let it flow onto the top of the tank. It actually made a very nice looking cone shaped seal. By that evening, I could tell the smell was getting better. It’s been about two weeks and you can’t detect it in the RV anymore. I have aired out the basement in the RV and that seems fine now too. I would highly recommend this flexible sealant. It’s amazing how flexible it is and how well it sealed this connection. We suffered with the smell for years until I had checked every fitting and the tank. The only thing left was this connection, but it appeared fine. The crack filling abilities of this self leveling system must have flowed into the source of the problem! Best ten bucks I’ve spent in a long time! ## Features - Multitool Accessories - Durable - Made in the USA ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00NO70BKA | | Amazon Bestseller | #1,147,039 in DIY, Tools & Garden ( See Top 100 in DIY, Tools & Garden ) #1,239 in Hardware Sealers | | Brand Name | SIKA | | Color | gray | | Compatible Material | Metal | | Customer Reviews | 4.6 4.6 out of 5 stars (1,828) | | Global Trade Identification Number | 00033886064514 | | Included Components | Sealant | | Item Dimensions | 29.2 x 5.1 x 29.2 cm | | Item Form | Liquid | | Item Weight | 286 g | | Manufacturer | Sika Corporation | | Material Type | Polyurethane | | Model | 427706 | | Number of Items | 1 | | Part Number | 427706 | | Style Name | Crack Flex Sealant | | Surface Recommendation | Concrete | | UPC | 033886093903 033886064514 | | Unit Count | 1.0 Count | | Water Resistance Level | Waterproof | ## Product Details - **Brand:** SIKA - **Item Weight:** 286 g - **Item dimensions L x W x H:** 29.2 x 5.1 x 29.2 cm - **Material:** Polyurethane - **Style:** Crack Flex Sealant ## Images ![Crack Flex Sealant, 10.1-Oz. -515306 - Image 1](https://m.media-amazon.com/images/I/610nqP+1m9L.jpg) ![Crack Flex Sealant, 10.1-Oz. -515306 - Image 2](https://m.media-amazon.com/images/I/81FKOJKEFkL.jpg) ![Crack Flex Sealant, 10.1-Oz. -515306 - Image 3](https://m.media-amazon.com/images/I/91Ym0rOmM4L.jpg) ![Crack Flex Sealant, 10.1-Oz. -515306 - Image 4](https://m.media-amazon.com/images/I/91542+uHWFL.jpg) ![Crack Flex Sealant, 10.1-Oz. -515306 - Image 5](https://m.media-amazon.com/images/I/71MAiLCA1tL.jpg) ## Questions & Answers **Q: After application, is this sandable? Also, if yes, is there an ideal period of “curing” before sanding?** A: Yes, you can sand once fully cured. It is recommended to wait 3 to 5 days prior to sanding. Thank you for choosing Sika! **Q: How long does it take to dry a one inch gas about one inch deep 10 '" long?** A: Two hours to dry. Twelve to twenty four hours to cure. **Q: Should I apply this before or after applying a (water based siloxane) concrete sealer?** A: Apply after the concrete sealer. **Q: How soon after application can it be driven on?** A: Hi Kelly. We recommend waiting 3 to 5 days for the sealant to fully cure before opening to vehicular traffic. Thank you for choosing Sika! ## Customer Reviews ### ⭐⭐⭐⭐ Review *by A***Y on April 14, 2025* Good product although a little expensive for the application ### ⭐⭐⭐⭐⭐ Review *by J***E on September 1, 2023* The gray water tank on my class A RV was smelling terrible. It was getting inside the living area and making everything smell terrible. I couldn’t find a leak anywhere. When I looked at all the connections and the tank, the only thing I could find was how this pipe went into the top of the tank, there was no rubber connection with clamps. That seemed very suspicious to me. It just appeared to be stuck into the top of the tank, and sealed in there with what appeared to be plumbers putty. I called the manufacturer and asked if this was how it was supposed to be. I would purchase a rubber connection if it was available. They said they are still doing it this way and if they have a problem to use a Sikaflex gray compound. I purchased a tube, and although the pipe comes out of the top of the tank I used the self leveling compound. I started applying it above the suspect area and let it flow down over the existing stuff and let it flow onto the top of the tank. It actually made a very nice looking cone shaped seal. By that evening, I could tell the smell was getting better. It’s been about two weeks and you can’t detect it in the RV anymore. I have aired out the basement in the RV and that seems fine now too. I would highly recommend this flexible sealant. It’s amazing how flexible it is and how well it sealed this connection. We suffered with the smell for years until I had checked every fitting and the tank. The only thing left was this connection, but it appeared fine. The crack filling abilities of this self leveling system must have flowed into the source of the problem! Best ten bucks I’ve spent in a long time! ### ⭐⭐⭐⭐⭐ Review *by J***N on September 11, 2024* solo que no hay manera de ver la caducidad del producto, lo mandan muy limitado ## Frequently Bought Together - Sikaflex Crack Flex Sealant, Gray, High performance, textured polyurethane sealant, self-leveling, sealant for sealing horizontal cracks, 10,1 fl. Oz - M-D Building Products - Versatile Gray Foam Backer Rod Set 1/2in x 20ft - Essential Caulk Saver for Sealing Concrete Gaps, Expansion Joints, and Crack Filling (71480) - M-D Building Products - Versatile Gray Foam Backer Rod - Essential Caulk Saver for Sealing Concrete Gaps, Expansion Joints, and Crack Filling, 3/8 by 20 Feet, (Pack of 2) (71464) --- ## 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.pt/products/735824543-crack-flex-sealant-10-1-oz-515306](https://www.desertcart.pt/products/735824543-crack-flex-sealant-10-1-oz-515306) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-04-24*