--- product_id: 304313725 title: "Sikaflex-221 - Black - Multi-purpose polyurethane sealant/adhesive - Creates permanent elastic seal - Sandable/paintable - Non-corrosive - 10.1 fl oz" brand: "sika" price: "€ 34.10" currency: EUR in_stock: true reviews_count: 5 category: "Sika" url: https://www.desertcart.sk/products/304313725-sikaflex-221-black-multi-purpose-polyurethane-sealant-adhesive-creates-permanent store_origin: SK region: Slovakia --- # waterproof & weather resistant bonds metals, plastics & ceramics 3 hr full cure time Sikaflex-221 - Black - Multi-purpose polyurethane sealant/adhesive - Creates permanent elastic seal - Sandable/paintable - Non-corrosive - 10.1 fl oz **Brand:** sika **Price:** € 34.10 **Availability:** ✅ In Stock ## Summary > 🔗 Seal it, stick it, trust it — the ultimate bond for pros who settle for nothing less! ## Quick Answers - **What is this?** Sikaflex-221 - Black - Multi-purpose polyurethane sealant/adhesive - Creates permanent elastic seal - Sandable/paintable - Non-corrosive - 10.1 fl oz by sika - **How much does it cost?** € 34.10 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/304313725-sikaflex-221-black-multi-purpose-polyurethane-sealant-adhesive-creates-permanent) ## Best For - sika enthusiasts ## Why This Product - Trusted sika brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Durable Elastic Seal:** Creates a permanent, flexible seal that withstands vibration, seawater, acids, and harsh weather. - • **Fast & Reliable Cure:** Achieves initial hardening in 1 hour and full cure in just 3 hours—get back to work faster. - • **Versatile Bonding Power:** Adheres seamlessly to metals, plastics, ceramics, and coated surfaces for all your project needs. - • **User-Friendly Application:** Ready-to-use cartridge fits all standard guns for precise, mess-controlled application every time. - • **Safe for Sensitive Environments:** NSF-approved for drinking water and food production—performance without compromise. ## Overview Sikaflex-221 is a premium black polyurethane sealant and adhesive designed for multi-surface bonding and permanent elastic sealing. It cures quickly upon exposure to moisture, forming a durable, waterproof, and vibration-resistant elastomer. NSF-approved and resistant to aging, seawater, and chemicals, it’s ideal for professional-grade automotive, construction, and industrial applications. ## Description Sikaflex-221 is a high-quality multi-purpose non-sag 1-c polyurethane sealant/adhesive that cures on exposure to atmospheric humidity to form a durable elastomer. Sikaflex-221 bonds well to a wide variety of substrates and is suitable for making permanent elastic seals of high adhesive strength. Suitable substrate materials are wood, metals, metal primers and paint coatings (2-c systems), ceramic materials and plastics. Review: I used Sikaflex to adhere a roof wing to the back windshield of my car, and I’m seriously impressed with how well it worked. The bond is incredibly strong and feels permanent once cured. I let it set for about 24 hours before driving, and even after months of highway speeds and temperature changes, the wing hasn’t budged at all. The application was pretty straightforward, it has a thick, tacky consistency that gives you enough working time to position everything correctly before it starts to set. I’d recommend taping or clamping the part in place while it cures, because it does take a while to fully harden. Once cured, it’s flexible enough to handle vibration and movement, which is great for automotive use. One thing to note: this stuff is messy. It’s sticky, and once it gets on your hands or paint, it’s not easy to remove. Wear gloves, mask off surrounding areas, and have some cleaner or mineral spirits ready. Overall, Sikaflex delivered exactly what I needed, a strong, weatherproof, and vibration resistant bond that’s holding my roof wing securely in place. It’s not the cheapest adhesive, but it’s worth it for the strength and reliability. Review: Very good ## Features - VERSATILITY AND QUALITY IN ONE - Sometimes simply called Sika 221 black, this one-component urethane caulk bonds to a range of substrates, including metals, plastics, and metal primers and coatings - AGE RESISTANT - Formulated to resist the effects of aging to better perform at peak capacity no matter the conditions. Also resists elements such as seawater, diluted acids, and caustic solutions - READY TO USE - The Sikaflex black sealant comes in a handy cartridge that fits easily on an electric, pneumatic or manual application gun, making accurate placement of adhesive paste quick and easy - SAFE AND EFFECTIVE - Approved by the NSF for use in both drinking water systems and food production operations, so you can rest easy knowing there's no harmful level of chemicals - PERFECT FOR INTERNAL SEALS AND BONDING - Use it for permanent seals that you can rely on. The paste also bonds to ceramic materials and cures quickly upon exposure to atmospheric moisture ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00NW5LWHA | | Best Sellers Rank | #463 in Automotive ( See Top 100 in Automotive ) #5 in Automotive Fillers, Adhesives & Sealants | | Brand Name | SIKA | | Color | Black | | Customer Reviews | 4.5 4.5 out of 5 stars (2,529) | | EU Spare Part Availability Duration | 5 Years | | Full Cure Time | 3 Hours | | Included Components | AP Products 017-90893 Sikaflex-221, Black | | Initial Hardening Time | 1 Hours | | Item Form | Paste | | Item Type Name | AP Products 017-90893 Sikaflex-221, Black | | Item Weight | 10.1 Ounces | | Liquid Volume | 10.1 Fluid Ounces | | Manufacturer | SIKA | | Material Type | Polyurethane | | Model | 017-90893 | | Number of Items | 1 | | Part Number | 017-90893 | | Surface Recommendation | Versatile, suitable for various surfaces | | Unit Count | 10.1 Fluid Ounces | | Water Resistance Level | Waterproof | ## Product Details - **Brand:** SIKA - **Colour:** Black - **Full cure time:** 3 Hours - **Item weight:** 10.1 Ounces - **Liquid volume:** 10.1 Fluid Ounces ## Images ![Sikaflex-221 - Black - Multi-purpose polyurethane sealant/adhesive - Creates permanent elastic seal - Sandable/paintable - Non-corrosive - 10.1 fl oz - Image 1](https://m.media-amazon.com/images/I/6177TD7R3eL.jpg) ## Available Options This product comes in different **Color, Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by O***A on 6 October 2025* I used Sikaflex to adhere a roof wing to the back windshield of my car, and I’m seriously impressed with how well it worked. The bond is incredibly strong and feels permanent once cured. I let it set for about 24 hours before driving, and even after months of highway speeds and temperature changes, the wing hasn’t budged at all. The application was pretty straightforward, it has a thick, tacky consistency that gives you enough working time to position everything correctly before it starts to set. I’d recommend taping or clamping the part in place while it cures, because it does take a while to fully harden. Once cured, it’s flexible enough to handle vibration and movement, which is great for automotive use. One thing to note: this stuff is messy. It’s sticky, and once it gets on your hands or paint, it’s not easy to remove. Wear gloves, mask off surrounding areas, and have some cleaner or mineral spirits ready. Overall, Sikaflex delivered exactly what I needed, a strong, weatherproof, and vibration resistant bond that’s holding my roof wing securely in place. It’s not the cheapest adhesive, but it’s worth it for the strength and reliability. ### ⭐⭐⭐⭐⭐ Review *by H***M on 3 November 2023* Very good ### ⭐⭐⭐⭐⭐ Review *by A***X on 18 February 2026* Buen sellador excelente para celular y buena. Marca ## Frequently Bought Together - Sika Sikaflex-221 - Black - Multi-Purpose Polyurethane sealant/Adhesive - Creates Permanent Elastic Seal - Sandable/paintable - Non-Corrosive - 10.1 fl oz - Dicor 551LSB-1 HAPS-Free NON-Leveling Lap Sealant - 10.3 Oz, Black, Secure, Ideal for RV Roofing, Maintenance, Repair, Appliance Application - Dicor BT-1834-1 Butyl Seal Tape - 1/8" x 3/4" x 30' Repair Tape for RV, Trailer, Motorhome, Window, and Vent Sealing --- ## 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.sk/products/304313725-sikaflex-221-black-multi-purpose-polyurethane-sealant-adhesive-creates-permanent](https://www.desertcart.sk/products/304313725-sikaflex-221-black-multi-purpose-polyurethane-sealant-adhesive-creates-permanent) --- *Product available on Desertcart Slovakia* *Store origin: SK* *Last updated: 2026-05-16*