--- product_id: 519438244 title: "Sika Sikaflex-221, Gray, multi-purpose sealant/adhesive, polyurethane fast curing sealant, 10.1 fl. oz Cartridge" brand: "sika" price: "€ 28.51" currency: EUR in_stock: true reviews_count: 6 category: "Sika" url: https://www.desertcart.it/products/519438244-sika-sikaflex-221-gray-multi-purpose-sealant-adhesive-polyurethane-fast store_origin: IT region: Italy --- # Fast curing in 2 hours Bonds to 7+ substrates Weather-resistant durability Sika Sikaflex-221, Gray, multi-purpose sealant/adhesive, polyurethane fast curing sealant, 10.1 fl. oz Cartridge **Brand:** sika **Price:** € 28.51 **Availability:** ✅ In Stock ## Summary > 🔧 Seal it. Stick it. Own it. The ultimate fix for pros who settle for nothing less. ## Quick Answers - **What is this?** Sika Sikaflex-221, Gray, multi-purpose sealant/adhesive, polyurethane fast curing sealant, 10.1 fl. oz Cartridge by sika - **How much does it cost?** € 28.51 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/products/519438244-sika-sikaflex-221-gray-multi-purpose-sealant-adhesive-polyurethane-fast) ## 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 - • **Eco-Smart Formula:** Low VOCs and NSF approved for incidental food contact—safe & sustainable - • **All-Weather Warrior:** Engineered to resist weathering and maintain elasticity over time - • **Universal Bonding Power:** Adheres seamlessly to wood, metal, ceramics, plastics & more - • **Rapid Strength, Zero Wait:** Cures fast in just 2 hours for quick project turnaround - • **Versatile Application Master:** Perfect for sealing, bonding, roofing, flooring, cabinets, and trim ## Overview Sika Sikaflex-221 is a premium gray polyurethane sealant/adhesive in a 10.1 fl. oz cartridge, designed for fast curing and high elasticity. It bonds strongly to a wide range of materials including wood, metals, ceramics, and plastics, while offering weather resistance and low VOC emissions. NSF approved for incidental food contact, it’s ideal for professional-grade sealing and bonding applications across construction, automotive, and home improvement projects. ## 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: As advertised - Good quality Review: This stuff is phenomenal and a Saving Grace it cures very hard but yet subtle ## Features - Highly elastic and multi-purpose, Sikaflex-221 is suitable for making permanent elastic seals of high adhesive strength. - PERFORMANCE: 1-C formulation. NSF approved for drinkable water and incidental food contact. Can be sanded and painted. - DURABILITY: Resistant to weathering exposure. Lower VOC’s. - SUPPORTS: Bonds well to a wide variety of substrates: wood, metals, metal primers and paint coatings (2-c systems), ceramic materials and plastics. - APPLICATION: Used for the panel sealing and bonding, root base sealing, nacelle sealing, tower sealing, installation & perimeter sealing, general metal construction sealing, metal panels, roofing, flooring bonding, cabinets, flooring and trim. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01GDN4AAI | | Best Sellers Rank | #2,018 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #48 in Silicone Sealers | | Brand Name | SIKA | | Color | Aluminum Gray | | Customer Reviews | 4.5 4.5 out of 5 stars (282) | | Full Cure Time | 5-7 Days | | Included Components | Sealant | | Initial Hardening Time | 2 Hours | | Item Form | Liquid | | Item Type Name | Sealant | | Item Weight | 350 Grams | | Liquid Volume | 10.3 Fluid Ounces | | Manufacturer | Sika | | Material Type | Polyurethane | | Maximum Gap Fill | 1 Inches | | Surface Recommendation | Tile, Counter Top, Window, Door, Sink, Tub, Gutter | | Temperature Range | 40-100 Degrees Fahrenheit | | UPC | 033886005104 | | Unit Count | 10.1 Milliliters | | Water Resistance Level | Water Resistant | ## Product Details - **Brand:** SIKA - **Colour:** Aluminum Gray - **Full cure time:** 5-7 Days - **Item weight:** 350 Grams - **Liquid volume:** 10.3 Fluid Ounces ## Images ![Sika Sikaflex-221, Gray, multi-purpose sealant/adhesive, polyurethane fast curing sealant, 10.1 fl. oz Cartridge - Image 1](https://m.media-amazon.com/images/I/51dlzDcXfvL.jpg) ## Available Options This product comes in different **Color, Style** options. ## Questions & Answers **Q: Would this work as a sealant on the abs fitting that inserts into the rv poly holding tank outlet and has a hose clamp?** A: Re UV protection. It is widely used on RV roofs so presumably is at least UV resistant. That said, I've found that it lasts only about 3 years on the roof of an RV that sits out in the sun. It is necessary to check it annually and rough up the existing material and add more where cracks have developed. The cracks are in part from expansion and contraction of the underlying parts, but do work their way up through the Sikaflex 221 and result in a leak of the crack is not repaired. I inspect my RV roof annually and usually need to do some repair to the older Sikaflex-221. **Q: Is this suitable for bonding a window into an aluminium u-channel on an rv? also, can i remove it if need be? thank you** A: Precisely the application to which I put the material to use in - sealing RV windshield to aluminum and fibreglass. Has worked flawlessly for 4 years. Easy to remove before cure; extremely difficult to fully remove after cure. **Q: Can someone verify if inventory issue fixed, ordered two blacks and received both white (stamped inside bottom of tube)** A: I have always received the correct color ordered (fulfilled by Amazon). Contact the Seller directly (or whoever is fulfilling an order on their behalf), to confirm inventoried colors. I would request a refund for any product that is not what you ordered. **Q: Do you recommend this for filling in concrete floor cracks? Will it self-level?** A: Not sure on concrete it may hold up but it will not self-level ## Customer Reviews ### ⭐⭐⭐⭐⭐ As advertised *by A***R on 10 April 2025* Good quality ### ⭐⭐⭐⭐⭐ Review *by A***M on 24 March 2026* This stuff is phenomenal and a Saving Grace it cures very hard but yet subtle ### ⭐⭐⭐⭐ Review *by J***N on 16 April 2026* Product works great on my RV, but this last tube I purchased had an “expiration” date that’s picky 3 months from the time of delivery. I’m not sure what happens after it expires, but why would Amazon send something like this so close to the expiration date? I keep a tube with me for RV repairs. ## Frequently Bought Together - Sika Sikaflex-221, Gray, multi-purpose sealant/adhesive, polyurethane fast curing sealant, 10.1 fl. oz Cartridge - 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.it/products/519438244-sika-sikaflex-221-gray-multi-purpose-sealant-adhesive-polyurethane-fast](https://www.desertcart.it/products/519438244-sika-sikaflex-221-gray-multi-purpose-sealant-adhesive-polyurethane-fast) --- *Product available on Desertcart Italy* *Store origin: IT* *Last updated: 2026-05-14*