--- product_id: 671546318 title: "Flex Caulk, Waterproof & Weatherproof Hybrid Polymer Sealant, Strong, Paintable, Indoor, Outdoor, Bath, Shower, Sink, Window, Baseboards, Door, RV, Roof, Wood, Auto & Marine, White, 4 oz, 1-Pack" brand: "flex seal" price: "88.30 DT" currency: TND in_stock: true reviews_count: 8 category: "Flex Seal" url: https://www.desertcart.tn/products/671546318-flex-caulk-waterproof-and-weatherproof-hybrid-polymer-sealant-strong-paintable store_origin: TN region: Tunisia --- # Fully Paintable Finish 100% Waterproof Seal No Caulk Gun Needed Flex Caulk, Waterproof & Weatherproof Hybrid Polymer Sealant, Strong, Paintable, Indoor, Outdoor, Bath, Shower, Sink, Window, Baseboards, Door, RV, Roof, Wood, Auto & Marine, White, 4 oz, 1-Pack **Brand:** flex seal **Price:** 88.30 DT **Availability:** ✅ In Stock ## Summary > 💪 Seal Strong, Stay Stylish – The Ultimate Hybrid Caulk for Every Surface! ## Quick Answers - **What is this?** Flex Caulk, Waterproof & Weatherproof Hybrid Polymer Sealant, Strong, Paintable, Indoor, Outdoor, Bath, Shower, Sink, Window, Baseboards, Door, RV, Roof, Wood, Auto & Marine, White, 4 oz, 1-Pack by flex seal - **How much does it cost?** 88.30 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/671546318-flex-caulk-waterproof-and-weatherproof-hybrid-polymer-sealant-strong-paintable) ## 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 - • **Eco-Smart Design:** Snap & Save cap minimizes waste and keeps product fresh - • **Unmatched Durability:** Advanced hybrid polymer resists UV, chemicals, and cracking - • **All-Weather Protection:** Seals out water, air, and moisture indoors and outdoors - • **Versatile Surface Bonding:** Adheres to wet or dry surfaces—wood, metal, tile, and more - • **Effortless Precision Application:** Adjustable Trigger Flow Nozzle for mess-free control ## Overview Flex Caulk is a premium 4 oz hybrid polymer sealant designed for professional-grade waterproofing and weatherproofing. Its innovative nozzle eliminates the need for a caulk gun, delivering precise, adjustable flow. This paintable, UV and chemical-resistant formula bonds to virtually any surface—wet or dry—ensuring long-lasting, crack-free seals indoors and outdoors, from windows and doors to marine and automotive applications. ## Description desertcart.com: Flex Caulk, Waterproof & Weatherproof Hybrid Polymer Sealant, Strong, Paintable, Indoor, Outdoor, Bath, Shower, Sink, Window, Baseboards, Door, RV, Roof, Wood, Auto & Marine, White, 4 oz, 1-Pack : Industrial & Scientific Review: The Best - This is the best thing ever, used it to fix several cracks in my underground pool steps. Is there was alot of water in the pool and this stuff did what it says. It sealed perfectly, after applying we waited about an hour then put a little more since the steps were submerged in water. It has been 3 weeks and it's still good. I would highly recommend this for any sealing job with water Review: Easy to use - Easier to use than most caulks but still caulking itself is such a task for the inexperienced. Used this to do interior of new installed windows and it worked well, about two normal sized windows per can. ## Features - So easy to use. - No caulk gun needed. - Adjustable Trigger Flow Nozzle. - Advanced hybrid polymer formulation. - Snap & Save cap eliminates waste. - Seals out water, air, and moisture. - Adheres to virtually any surface, wet or dry. - Won’t shrink, crack, or become brittle. - UV and chemical resistant. - Fully paintable. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0DK9YCYYW | | Best Sellers Rank | #120 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1 in Adhesive Caulk | | Brand | Flex Seal | | Brand Name | Flex Seal | | Color | White | | Customer Reviews | 4.0 out of 5 stars 129 Reviews | | Included Components | Flex Caulk, White, 4 oz, 1-Pack | | Item Form | Liquid | | Liquid Volume | 4 fluid ounces | | Manufacturer | Swift Response, LLC | | Material Type | Synthetic Polymer | | Model | CFSWHTR100 | | Number of Items | 1 | | Part Number | CFSWHTR100 | | Surface Recommendation | Tile | | Tensile Strength | 200 psi | | UPC | 810129870749 | | Unit Count | 4 Fluid Ounces | | Water Resistance Level | Waterproof | ## Product Details - **Brand:** Flex Seal - **Color:** White - **Item Form:** Liquid - **Liquid Volume:** 4 Fluid Ounces - **Surface Recommendation:** Tile ## Images ![Flex Caulk, Waterproof & Weatherproof Hybrid Polymer Sealant, Strong, Paintable, Indoor, Outdoor, Bath, Shower, Sink, Window, Baseboards, Door, RV, Roof, Wood, Auto & Marine, White, 4 oz, 1-Pack - Image 1](https://m.media-amazon.com/images/I/61b8JycHEQL.jpg) ## Available Options This product comes in different **Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ The Best *by H***R on July 30, 2026* This is the best thing ever, used it to fix several cracks in my underground pool steps. Is there was alot of water in the pool and this stuff did what it says. It sealed perfectly, after applying we waited about an hour then put a little more since the steps were submerged in water. It has been 3 weeks and it's still good. I would highly recommend this for any sealing job with water ### ⭐⭐⭐⭐⭐ Easy to use *by P***Z on April 27, 2026* Easier to use than most caulks but still caulking itself is such a task for the inexperienced. Used this to do interior of new installed windows and it worked well, about two normal sized windows per can. ### ⭐ Very disappointed *by R***H on July 28, 2026* WARNING DO NOT BUY!!!! Could not get this to work. After 30 minutes still couldn't get any product to come out. Also you can't return for a refund. --- ## 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.tn/products/671546318-flex-caulk-waterproof-and-weatherproof-hybrid-polymer-sealant-strong-paintable](https://www.desertcart.tn/products/671546318-flex-caulk-waterproof-and-weatherproof-hybrid-polymer-sealant-strong-paintable) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-09-01*