--- product_id: 624311349 title: "Flex Caulk Hybrid Polymer Waterproof Sealant, Clear, 6.6 oz, 1-Pack | No caulk gun needed, trigger flow nozzle, paintable, won't shrink or crack, seals wet or dry, bath, kitchen, sink, window, RV" brand: "flex seal" price: "$42.65" currency: USD in_stock: true reviews_count: 8 url: https://www.desertcart.us/products/624311349-flex-caulk-hybrid-polymer-waterproof-sealant-clear-6-6-oz store_origin: US region: United States of America --- # Adjustable Trigger Flow Nozzle for precision 100% Waterproof & Weatherproof UV & Chemical Resistant Hybrid Polymer Flex Caulk Hybrid Polymer Waterproof Sealant, Clear, 6.6 oz, 1-Pack | No caulk gun needed, trigger flow nozzle, paintable, won't shrink or crack, seals wet or dry, bath, kitchen, sink, window, RV **Brand:** flex seal **Price:** $42.65 **Availability:** ✅ In Stock ## Summary > 💪 Seal Smart, Seal Strong — The Last Caulk You'll Ever Need! ## Quick Answers - **What is this?** Flex Caulk Hybrid Polymer Waterproof Sealant, Clear, 6.6 oz, 1-Pack | No caulk gun needed, trigger flow nozzle, paintable, won't shrink or crack, seals wet or dry, bath, kitchen, sink, window, RV by flex seal - **How much does it cost?** $42.65 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/624311349-flex-caulk-hybrid-polymer-waterproof-sealant-clear-6-6-oz) ## 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 - • **Ultimate Flexibility:** Hybrid polymer formula expands and contracts without cracking or shrinking. - • **Versatile Application:** Perfect for indoor & outdoor use on virtually any surface—bath, kitchen, auto, marine, and more. - • **All-Weather Durability:** Seals out water, air, and moisture—works even underwater and in harsh UV conditions. - • **Precision Flow Control:** Dial up or down for flawless bead size every time—no caulk gun needed. - • **Mess-Free & Eco-Friendly:** Snap & Save cap prevents waste; solvent-free and virtually odorless for a clean, professional finish. ## Overview Flex Caulk is a clear, 6.6 oz hybrid polymer sealant designed for professional-grade waterproofing and weatherproofing. Featuring an adjustable trigger flow nozzle for precise application without a caulk gun, it adheres to wet or dry surfaces and remains flexible without cracking. UV and chemical resistant, fully paintable, and solvent-free, it’s ideal for indoor and outdoor use across a wide range of surfaces including baths, windows, roofs, and marine environments. ## Description Lets you control the flow, so you can always “dial up” the perfect bead size. Turn it down for pinpoint precision. Crank it up for maximum coverage. Unlike other caulks that dry out Flex Caulk’s innovative hybrid polymer formula allows it to expand and contract, and stay completely flexible. Flex Caulk is 100% waterproof and weatherproof, as well as chemical and UV resistant. Plus, it’s solvent-free and virtually odorless. There’s no need to wait for surfaces to completely dry before caulking them. It even works underwater! Bathrooms, kitchens, sinks, showers, toilets, backsplashes, counter tops, baseboards, mouldings, pipes, skylights, windows, doors, autos, boats, and more. Flex Caulk is proudly made in America, using globally sourced products. Adjust the flow setting to the desired amount. Hold at a 45° angle, push trigger down, while moving the nozzle in an even motion. Remove excess caulk with a dry paper towel, do not use water. After use, secure the “Snap & Save” cap tightly on the nozzle. ## 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 | B0D2FKV95Q | | Best Sellers Rank | #120 in Industrial & Scientific (See Top 100 in Industrial & Scientific) #1 in Adhesive Caulk | | Brand Name | Flex Seal | | Color | Clear | | Customer Reviews | 4.4 4.4 out of 5 stars (2,073) 4.4 out of 5 stars | | Full Cure Time | 24 hours | | Included Components | Flex Caulk, Clear, 6.6 oz, 1-Pack | | Initial Hardening Time | 10 minutes minutes | | Item Form | Liquid | | Item Weight | 6.6 ounces | | Liquid Volume | 6.6 fluid ounces | | Manufacturer | Swift Response, LLC | | Material Type | Hybrid Polymer | | Model | CFSCLRR675 | | Number Of Items | 1 | | Number Of Packs | 1 | | Part Number | CFSCLRR675 | | Surface Recommendation | Tile, Pipe, Counter Top, Window, Door, Sink, Tub, Walls, Gutter | | Unit Count | 6.6 Fluid Ounces | | Upc | 810129870787 | | Water Resistance Level | Waterproof | ## Product Details - **Brand:** Flex Seal - **Color:** Clear - **Full Cure Time:** 24 hours - **Item Weight:** 6.6 ounces - **Liquid Volume:** 6.6 fluid ounces ## Images ![Flex Caulk Hybrid Polymer Waterproof Sealant, Clear, 6.6 oz, 1-Pack | No caulk gun needed, trigger flow nozzle, paintable, won't shrink or crack, seals wet or dry, bath, kitchen, sink, window, RV - Image 1](https://m.media-amazon.com/images/I/61div+JfYVL.jpg) ## Available Options This product comes in different **Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Easy to use *by on Reviewed in the United States August 6, 2026* I love this product. I don't know why it has all these bad reviews. It worth 5 stars. ### ⭐⭐⭐⭐⭐ Better quality caulking, easy to apply *by on Reviewed in the United States April 5, 2026* When replacing a failing under-counter mounted sink (the glue failed), I chose a drop in replacement sink (also reviewed on Amazon), so it won't Halen again (unless gravity fails!).This is the sealant I used you ensure the new sink would not leak around the rim. Other herbal kitchen/ bathroom soft white caulking makes nice edges, but often gives out, needing replaced. THIS stuff is tough, and with a generous ring sandwiched around the sink beneath the flange/ rim, this stuff will both seal and ensure the sink remains firm in place.Of course I added the sink recommended bracing beneath, to ensure the sink stayed in place while the Flex Caulk was drying.This stuff is easy to apply, and not watery like the generic cheap stuff in the hardware warehouse stores. Months after installation, this caulking is firm in place, wipe-able along the sink edges with a wet rag, and "semi-rigid" (flexible yes, but firm in place). ### ⭐⭐⭐⭐⭐ Perfect for small jobs *by on Reviewed in the United States August 7, 2026* I didn't realize this existed. No caulk gun needed. I don't recall an odor when. using it. It can be closed and used another time! It has a twist nozzle that allows you to adjust the bead size. Perfect for smaller jobs. It provides a strong waterproof seal. Heavy storms have always forced water into a corner of my kitchen but not since using this. I've painted over it and you wouldn't know its there. Very durable and sets quickly. ## Frequently Bought Together - Flex Caulk, Waterproof & Weatherproof Hybrid Polymer Sealant, Strong, Paintable, Indoor, Outdoor, Bath, Shower, Sink, Window, Baseboards, Door, RV, Roof, Wood, Auto & Marine, Clear, 6.6 oz, 1-Pack - Flex Seal, 14 oz, Clear, Stop Leaks Instantly, Transparent Waterproof Rubber Spray On Sealant Coating, Perfect for Gutters, Wood, RV, Campers, Roof Repair, Skylights, Windows, and More --- ## 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/624311349-flex-caulk-hybrid-polymer-waterproof-sealant-clear-6-6-oz](https://www.desertcart.us/products/624311349-flex-caulk-hybrid-polymer-waterproof-sealant-clear-6-6-oz) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-09-01*