--- product_id: 378191769 title: "Flex Paste 9oz Cartridge (Black)" brand: "flex paste" price: "C$4176" currency: NIO in_stock: true reviews_count: 5 url: https://www.desertcart.ni/products/378191769-flex-paste-9oz-cartridge-black store_origin: NI region: Nicaragua --- # Dries underwater Fully paintable finish Watertight rubberized barrier Flex Paste 9oz Cartridge (Black) **Brand:** flex paste **Price:** C$4176 **Availability:** ✅ In Stock ## Summary > 🛠️ Seal it, save it, style it — the ultimate fix for every crack! ## Quick Answers - **What is this?** Flex Paste 9oz Cartridge (Black) by flex paste - **How much does it cost?** C$4176 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.ni](https://www.desertcart.ni/products/378191769-flex-paste-9oz-cartridge-black) ## Best For - flex paste enthusiasts ## Why This Product - Trusted flex paste brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Custom Finish Ready:** Once cured, paint it any color to match your style while preventing rust, corrosion, and UV damage. - • **Stay Fresh, Waste Less:** Innovative airtight container locks in freshness, extending sealing power and reducing waste. - • **Seal & Protect Like a Pro:** Creates a flexible, durable barrier that blocks air, water, and moisture for long-lasting protection. - • **Super Thick, Super Strong:** Instantly fills large gaps, cracks, and holes with a clingy, rubberized paste that won’t sag or shrink. - • **Underwater Application Magic:** Apply and cure underwater—perfect for those hard-to-reach, wet repair jobs. ## Overview Flex Paste 9oz Cartridge in Black delivers a professional-grade, flexible rubberized sealant that blocks air, water, and moisture. Its unique formula allows application and drying underwater, while the new airtight container preserves freshness and potency. Designed to fill large gaps instantly, it cures to a paintable, UV-resistant finish that prevents rust and corrosion, making it the go-to solution for durable, versatile repairs. ## Description Flex Paste 9 Oz. Cartridge - Black Review: I have used this in the paste tin format, and it is awesome. Having in a caulking gun format only increases the amount of awesomeness. Review: This product is great! I have used it in the can and the tube on my rubber driveway to keep the edges from lifting. Yes I would recomend. ## Features - NEW! STAY FRESH CONTAINER – Blocks out air and locks in freshness to extend the sealing power of Flex Paste, with no waste - COAT, SEAL & PROTECT - Penetrates deep to seal out air, water, and moisture. Once dry, it turns into a strong, flexible, watertight, rubberized barrier - WORKS UNDERWATER - Can be applied underwater, and it even dries underwater - FILLS LARGE AREAS - Super thick rubber paste clings to the surface and instantly fills large gaps, cracks, and holes - FULLY PAINTABLE - Once fully cured, it can be painted any color. Helps prevent rust and corrosion, and it is UV resistant ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B084TDD2FB | | Best Sellers Rank | #74,455 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #262 in Silicone Sealers | | Department | Unisex-Adult | | Item model number | FLEX SEAL - PFSBLKR10 - BLACK | | Manufacturer | Flex Seal | | Product Dimensions | 28.58 x 7.62 x 7.62 cm; 255.15 g | ## Product Details - **Brand:** Flex Paste - **Item dimensions L x W x H:** 28.6 x 7.6 x 7.6 centimeters - **Item weight:** 9 Ounces - **Material:** Rubber - **Style:** 9 oz Black ## Images ![Flex Paste 9oz Cartridge (Black) - Image 1](https://m.media-amazon.com/images/I/61cv+cPofgL.jpg) ## Questions & Answers **Q: Can I use it around the base of my toilet?** A: You can! We recommend keeping it near the base of the toilet and not spreading it through the floor as it can become slippery when wet. Let us know how the project goes! **Q: can flex glue be used to repair a roho inflatable neoprene wheelchair cushion?** A: not sure, they make a tape like duct tape, that might work. The paste is more for sealing cracks. **Q: can you paint after this is applied?** A: Spray paint might eat the rubber away or anything else that has more of a solvent when you paint I wouldn’t use on this **Q: Will it fix a hole puncture on a 8” subwoofer?** A: Yes read my post about the puncture on my 2016 ford interceptor rear quarter panel worked like a champ on this damage from a corner of a shelf on the wall ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by B***L on 29 May 2025* I have used this in the paste tin format, and it is awesome. Having in a caulking gun format only increases the amount of awesomeness. ### ⭐⭐⭐⭐⭐ Review *by D***E on 23 October 2025* This product is great! I have used it in the can and the tube on my rubber driveway to keep the edges from lifting. Yes I would recomend. ### ⭐⭐⭐⭐⭐ Review *by N***9 on 22 March 2025* My cars roof has some pretty bad rust, finally it started to leak. So before winter came I decided to seal it up with this. To my surprise it works really well lol… not the best thing to use on your roof, but it’s the quick and easy repair for an older car. Not the way I wanted to repair it, but it does the trick for now! ## Frequently Bought Together - Flex Paste, Waterproof Paintable Putty, Spackle Sealant, Fill Gaps Cracks Holes - Block Out Water and Air - UV Resistant - Walls, Drywall, EPDM, Concrete, Roof, RV Repairs, Black, Cartridge - Flex Seal 2-Pack Black 17oz Stop Leaks Instantly, Waterproof Sealant Coating For Gutters, RV, Roof, Skylights, Windows - Flex Paste, Waterproof Paintable Putty, Spackle Sealant, Fill Gaps Cracks Holes - Block Out Water and Air - UV Resistant - Walls, Drywall, EPDM, Concrete, Roof, RV Repairs, Black, Half-Quart --- ## 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.ni/products/378191769-flex-paste-9oz-cartridge-black](https://www.desertcart.ni/products/378191769-flex-paste-9oz-cartridge-black) --- *Product available on Desertcart Nicaragua* *Store origin: NI* *Last updated: 2026-04-22*