--- product_id: 444650901 title: "Sika Sikaflex-221, White, multi-purpose sealant/adhesive, polyurethane fast curing sealant, 10.1 fl. oz Cartridge" price: "£13.44" currency: GBP in_stock: true reviews_count: 13 url: https://www.desertcart.co.uk/products/444650901-sika-sikaflex-221-white-multi-purpose-sealant-adhesive-polyurethane-fast store_origin: GB region: United Kingdom --- # Sika Sikaflex-221, White, multi-purpose sealant/adhesive, polyurethane fast curing sealant, 10.1 fl. oz Cartridge **Price:** £13.44 **Availability:** ✅ In Stock ## Quick Answers - **What is this?** Sika Sikaflex-221, White, multi-purpose sealant/adhesive, polyurethane fast curing sealant, 10.1 fl. oz Cartridge - **How much does it cost?** £13.44 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/444650901-sika-sikaflex-221-white-multi-purpose-sealant-adhesive-polyurethane-fast) ## Best For - Customers looking for quality international products ## Why This Product - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## 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. ## Available Options This product comes in different **Color, Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ This is my “go to” for construction. *by K***E on Reviewed in the United States on April 3, 2021* I have used this in all applications of wood construction.Just be aware...the two surfaces you put together with this are bonded into eternity.....be sure you really want that cause it is never coming apart again.I have to put a shelf into a fiberglass head liner. Obviously, I could not drive screws. I bonded 2x3 boards directly to the fiberglass. Then screwed to shelf into those boards. The shelf hangs from those boards. That was 4 years ago....nothing has moved at all. This is in my RV, bouncing up and down on some rough roads with the shelf fully loaded.....it is still as solid as the day I put it up ### ⭐⭐⭐⭐⭐ Good sealant *by R***R on Reviewed in the United States on January 4, 2019* Initial impressions are that this is going to hold up better than silicone. Time will tell. I like the fact that it will cure even at very low temperatures, though it does cure more slowly. For storage of the unused amount, wrap the tip of the cartridge with cellophane and store the cartridge in the fridge. Keeps for months without hardening!Note: this urethane clings to your skin like nothing else -- it wipes off easy and doesn't feel sticky, but your fingers will be black for a week. Guaranteed. Nothing scrubs it off except time. ### ⭐⭐⭐⭐⭐ Re-caulk the roof of my Airstream *by T***R on Reviewed in the United States on March 16, 2021* I made the decision to replace the bedroom vent with a Fantastic-fan. While up there, I noticed how horrible all of 2003/original caulk was. I purchased this SIKA for the rain/water channel running each side of the camper. I bought Dicor 501 for around the Fans, TV and Radio antennas. (not an expert just a regular Joe), The first tube had some damage so it was returned and quickly replacement (thank you Amazon). The next tube was perfect and ready for use. I will say, this is a little harder to use than the Dicor but I also believe they are two different products for two different uses. You better have strong forearms and grip b/c this stuff comes out slower and stiffer :) as a result it will stay where you put it and wont self level. Clean up wasn't that bad but my clothing might be another story. (Would I buy it again....absolutely) --- ## 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.co.uk/products/444650901-sika-sikaflex-221-white-multi-purpose-sealant-adhesive-polyurethane-fast](https://www.desertcart.co.uk/products/444650901-sika-sikaflex-221-white-multi-purpose-sealant-adhesive-polyurethane-fast) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-06-12*