--- 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: "VT5309" currency: VUV in_stock: true reviews_count: 6 category: "Flex Seal" url: https://www.desertcart.vu/products/671546318-flex-caulk-waterproof-and-weatherproof-hybrid-polymer-sealant-strong-paintable store_origin: VU region: Vanuatu --- # UV resistant 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:** VT5309 **Availability:** βœ… In Stock ## Summary > Seal the Deal! πŸ› οΈ ## 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?** VT5309 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/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 - β€’ **Paintable Finish:** Fully paintable to match any decor or project seamlessly. - β€’ **Easy Flow Control:** Adjustable trigger flow nozzle for precision application. - β€’ **Waste Not, Want Not:** Snap & Save cap design minimizes waste and maximizes efficiency. - β€’ **Seal with Confidence:** Advanced hybrid polymer formulation ensures a strong, lasting bond. - β€’ **Versatile Application:** Perfect for indoor and outdoor use, from bathrooms to boats. ## Overview Flex Caulk is a versatile, waterproof, and weatherproof hybrid polymer sealant designed for a wide range of applications. With its easy-to-use design, adjustable nozzle, and advanced formulation, it adheres to virtually any surface while providing a durable, paintable finish. Ideal for both indoor and outdoor projects, this sealant is resistant to UV rays and chemicals, ensuring long-lasting performance without shrinkage or brittleness. ## 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: Waterproof, flexible and easy caulking - We bought our new house with little things here and there to do. I haven't used all of one of these yet. It was so easy to use. We had a new tub put in and the plumbers caulking peeled off within a week. I saw this was flexible and waterproof. So far, it is absolutely both and staying on. Review: It works - It works. Maybe a little pricey for what you get. But it does work. ## 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 | #114 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1 in Adhesive Caulk | | Brand Name | Flex Seal | | Color | White | | Customer Reviews | 4.5 4.5 out of 5 stars (37) | | 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 | | Surface Recommendation | Tile | | Tensile Strength | 200 Pounds Per Square Inch | | UPC | 810129870749 | | Unit Count | 4.0 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) ![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 2](https://m.media-amazon.com/images/I/71GZ0nOeZ1L.jpg) ![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 3](https://m.media-amazon.com/images/I/81VALuspk5L.jpg) ![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 4](https://m.media-amazon.com/images/I/81Qt93T3zkL.jpg) ![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 5](https://m.media-amazon.com/images/I/918LYL9+VsL.jpg) ## Available Options This product comes in different **Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Waterproof, flexible and easy caulking *by U***N on April 14, 2026* We bought our new house with little things here and there to do. I haven't used all of one of these yet. It was so easy to use. We had a new tub put in and the plumbers caulking peeled off within a week. I saw this was flexible and waterproof. So far, it is absolutely both and staying on. ### ⭐⭐⭐⭐⭐ It works *by J***R on April 12, 2026* It works. Maybe a little pricey for what you get. But it does work. ### ⭐⭐⭐⭐⭐ Super Easy to Use *by R***Z on December 28, 2024* This was a great purchase. It was super easy to use. I like the fact you can reuse it without it drying out and use it without the need for a separate tube gun. My only warning is if you are working on a bathtub or shower use it on the lowest setting first. It works well but max opening will let out a lot 9f the caulk and make a mess unless you need that much. Otherwise, start on the lowest setting to test a spot first especially if you try to do that without taping first. I will be buying this again when needed. --- ## 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.vu/products/671546318-flex-caulk-waterproof-and-weatherproof-hybrid-polymer-sealant-strong-paintable](https://www.desertcart.vu/products/671546318-flex-caulk-waterproof-and-weatherproof-hybrid-polymer-sealant-strong-paintable) --- *Product available on Desertcart Vanuatu* *Store origin: VU* *Last updated: 2026-05-05*