--- product_id: 667743216 title: "Flex Caulk, Waterproof & Weatherproof Hybrid Polymer Sealant, Strong, Paintable, Indoor, Outdoor, Bath, Shower, Sink, Window, Baseboards, Door, RV, Roof, Wood, Auto & Marine, Clear, 3 oz, 2-Pack" brand: "flex seal" price: "$66.74" currency: USD in_stock: true reviews_count: 2 category: "Flex Seal" url: https://www.desertcart.us/products/667743216-flex-caulk-waterproof-and-weatherproof-hybrid-polymer-sealant-strong-paintable store_origin: US region: United States of America --- # 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, Clear, 3 oz, 2-Pack **Brand:** flex seal **Price:** $66.74 **Availability:** ✅ In Stock ## Summary > 💪 Seal Strong, Stay Stylish – The Last Caulk You'll Ever Need! ## 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, Clear, 3 oz, 2-Pack by flex seal - **How much does it cost?** $66.74 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/667743216-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 - • **Durability That Lasts:** Won't shrink, crack, or become brittle over time - • **Versatile Use Anywhere:** Perfect for indoor & outdoor, from windows to marine surfaces - • **Eco-Smart Snap & Save Cap:** Eliminates waste and keeps your sealant fresh - • **Effortless Precision Application:** Adjustable Trigger Flow Nozzle for mess-free control - • **Ultimate Weatherproof Protection:** Seals out water, air, and moisture on any surface ## Overview Flex Caulk is a clear, hybrid polymer sealant designed for professional-grade waterproofing and weatherproofing. Its easy-to-use nozzle requires no caulk gun, delivering precise application on virtually any surface—wet or dry. With superior durability, UV and chemical resistance, and a fully paintable finish, it’s ideal for indoor and outdoor projects including baths, windows, roofs, and marine use. Packaged in a convenient 2-pack, it’s the go-to solution for lasting, clean seals that keep your space protected and polished. ## Description Flex Caulk, Waterproof & Weatherproof Hybrid Polymer Sealant, Strong, Paintable, Indoor, Outdoor, Bath, Shower, Sink, Window, Baseboards, Door, RV, Roof, Wood, Auto & Marine, Clear, 3 oz, 2-Pack: desertcart.com: Industrial & Scientific Review: Easy and effective. Neat application waterproof and convenient. - I live in a townhouse and I have pests. If I see a crack or a hole, I have to fill it until my brother can come and fix it correctly. This product was so easy to use and clean, and neat. I will definitely buy more. Great for amateurs, which I clearly am, Lol, and I imagine professionals. Review: Don’t buy - Not worth the trouble. Have to remove and redo all the caulking. It attracts dirt and looks like crap. ## 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 | B0DK9XC2D2 | | Best Sellers Rank | #114 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1 in Adhesive Caulk | | Brand Name | Flex Seal | | Color | Clear | | Customer Reviews | 4.0 4.0 out of 5 stars (7) | | Full Cure Time | 24 Hours | | Included Components | Flex Caulk, Clear, 3 oz, 2-Pack | | Item Form | Liquid | | Liquid Volume | 6 Fluid Ounces | | Manufacturer | Swift Response, LLC | | Surface Recommendation | Counter Top, Door, Gutter, Pipe, Sink, Tile, Tub, Walls, Window | | Tensile Strength | 200 Pounds Per Square Inch | | UPC | 810129871845 | | Unit Count | 6.0 Fluid Ounces | | Water Resistance Level | Waterproof | ## Product Details - **Brand:** Flex Seal - **Color:** Clear - **Full Cure Time:** 24 Hours - **Item Form:** Liquid - **Liquid Volume:** 6 Fluid Ounces ## Images ![Flex Caulk, Waterproof & Weatherproof Hybrid Polymer Sealant, Strong, Paintable, Indoor, Outdoor, Bath, Shower, Sink, Window, Baseboards, Door, RV, Roof, Wood, Auto & Marine, Clear, 3 oz, 2-Pack - Image 1](https://m.media-amazon.com/images/I/71xy-iomc+L.jpg) ![Flex Caulk, Waterproof & Weatherproof Hybrid Polymer Sealant, Strong, Paintable, Indoor, Outdoor, Bath, Shower, Sink, Window, Baseboards, Door, RV, Roof, Wood, Auto & Marine, Clear, 3 oz, 2-Pack - Image 2](https://m.media-amazon.com/images/I/71kzVXsAvvL.jpg) ![Flex Caulk, Waterproof & Weatherproof Hybrid Polymer Sealant, Strong, Paintable, Indoor, Outdoor, Bath, Shower, Sink, Window, Baseboards, Door, RV, Roof, Wood, Auto & Marine, Clear, 3 oz, 2-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, Clear, 3 oz, 2-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, Clear, 3 oz, 2-Pack - Image 5](https://m.media-amazon.com/images/I/918LYL9+VsL.jpg) ## Available Options This product comes in different **Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Easy and effective. Neat application waterproof and convenient. *by A***R on June 9, 2025* I live in a townhouse and I have pests. If I see a crack or a hole, I have to fill it until my brother can come and fix it correctly. This product was so easy to use and clean, and neat. I will definitely buy more. Great for amateurs, which I clearly am, Lol, and I imagine professionals. ### ⭐ Don’t buy *by D***S on January 24, 2026* Not worth the trouble. Have to remove and redo all the caulking. It attracts dirt and looks like crap. --- ## 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.us/products/667743216-flex-caulk-waterproof-and-weatherproof-hybrid-polymer-sealant-strong-paintable](https://www.desertcart.us/products/667743216-flex-caulk-waterproof-and-weatherproof-hybrid-polymer-sealant-strong-paintable) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-06-24*