--- product_id: 213661978 title: "Sikaflex 521 UV – Weathering Resistant STP Adhesive Sealant – Multipurpose – Low Odour – Age and Weather Resistant – Light Grey – 300ml" brand: "sika" price: "301.70 DT" currency: TND in_stock: true url: https://www.desertcart.tn/products/213661978-sikaflex-521-uv-weathering-resistant-stp-adhesive-sealant-multipurpose-low store_origin: TN region: Tunisia --- # 24h full cure time Weather & age resistant Multipurpose adhesion Sikaflex 521 UV – Weathering Resistant STP Adhesive Sealant – Multipurpose – Low Odour – Age and Weather Resistant – Light Grey – 300ml **Brand:** sika **Price:** 301.70 DT **Availability:** ✅ In Stock ## Summary > 🛠️ Seal it once, seal it right — weatherproof your projects with Sikaflex 521 UV! ## Quick Answers - **What is this?** Sikaflex 521 UV – Weathering Resistant STP Adhesive Sealant – Multipurpose – Low Odour – Age and Weather Resistant – Light Grey – 300ml by sika - **How much does it cost?** 301.70 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/213661978-sikaflex-521-uv-weathering-resistant-stp-adhesive-sealant-multipurpose-low) ## 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 - • **Fast 24-Hour Cure:** Get professional results with a fully cured, flexible seal in just one day. - • **All-Weather Durability:** Engineered to withstand harsh weather and aging, ensuring long-lasting bonds indoors and out. - • **Primer-Free Versatility:** Bond timber, metals, ceramics, and plastics without the hassle of primers or extra prep. - • **Low Odour & Safe Handling:** Solvent-free, isocyanate-based formula that’s easy to sand and paint over for a flawless finish. - • **Multiple Application Methods:** Compatible with hand, pneumatic, or electric piston guns for seamless professional use. ## Overview Sikaflex 521 UV is a professional-grade, light grey STP adhesive sealant designed for multipurpose use without primers. It cures in 24 hours to a flexible, weather and age-resistant finish suitable for interior and exterior applications on timber, metals, ceramics, and plastics. Low odour and solvent-free, it can be sanded and painted over, offering a durable, long-lasting bond applied easily with various piston guns. ## Description Need a multipurpose sealant and adhesive for your construction work? Sikaflex 521 is a light grey adhesive sealant designed for use without primers and minimal preparation. The durable formula is crafted using 1-component Silane Terminated Polymer (STP) and cures to a flexible finish in ambient moisture. Use this low-odour formula inside and outside on timber, metals, metal primers and paint coatings, ceramic materials and plastics for a long-lasting, durable finish resistant to ageing and weathering. Apply using a hand, pneumatic or electric-driven piston gun, and it should cure in 24 hours. Once dry, sand or paint over it for a professional finish. Also available in white and black. ## Features - PROFESSIONAL PRODUCT – Designed for use by professional applicators. - DURABLE FORMULA – Once cured, this flexible polymer adhesive is resistant to ageing and weathering, ensuring long-lasting bonds. - WIDE RANGE OF APPLICATIONS – Ideal for bonding a wide range of substrates without the need for priming, including timber, metals, metal primers and paint coatings, ceramic materials and plastics. - ADAPTABLE AND SAFE – This Sikaflex sealant is crafted from isocyanate and is solvent-free, meaning it's flexible and can be safely sanded and painted once cured. - SUITABLE FOR INTERIOR AND EXTERIOR USE – Use this hardwearing, long-lasting and protected grey sealant anywhere regular or flexible finishes are required. - THREE COLOURS AVAILABLE – Apply this light grey sealant using a hand, pneumatic or electric-driven piston gun. Also available in white and black. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00BEFGCE8 | | Best Sellers Rank | #685,461 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1,405 in Adhesive Caulk #2,507 in Industrial Sealants #265,776 in Hardware | | Brand | SIKA | | Brand Name | SIKA | | Color | Light Gray | | Customer Reviews | 4.6 out of 5 stars 1,483 Reviews | | Full Cure Time | 24 hours | | Global Trade Identification Number | 07612894184518 | | Included Components | 1 cartridge | | Item Form | Paste | | Item Type Name | Sikaflex 521UV Weathering Resistant Silane Terminated Polymer (STP) Adhesive Sealant, Light Grey, 300 ml | | Item Weight | 0.42 kg | | Liquid Volume | 300 ml | | Manufacturer | Sika | | Material Type | Silane Terminated Polymer | | Model | 512UV | | Number of Items | 1 | | Number of Packs | 1 | | Part Number | 62139 | | Surface Recommendation | Door, Metal, Pipe, Wood | | Unit Count | 10.14 Fluid Ounces | | Water Resistance Level | Waterproof | ## Product Details - **Brand:** SIKA - **Color:** Light Gray - **Full Cure Time:** 24 hours - **Item Weight:** 0.42 kg - **Liquid Volume:** 300 ml ## Images ![Sikaflex 521 UV – Weathering Resistant STP Adhesive Sealant – Multipurpose – Low Odour – Age and Weather Resistant – Light Grey – 300ml - Image 1](https://m.media-amazon.com/images/I/61FfAoQnHzL.jpg) ## Frequently Bought Together - Sika Sikaflex 521 UV – Weathering Resistant STP Adhesive Sealant – Multipurpose – Low Odour – Age And Weather Resistant – Light Grey – 300ml - Sika Mounting Adhesive - Sikaflex-554 Black - Ideal for Large Components and High Dynamic Load - Ageing and Weather Resistant - 300 ml - Sika Sikaflex-522 Caravan And Motorhome Adhesive Sealant – Weather And Mould Resistant – White – 300ml --- ## 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.tn/products/213661978-sikaflex-521-uv-weathering-resistant-stp-adhesive-sealant-multipurpose-low](https://www.desertcart.tn/products/213661978-sikaflex-521-uv-weathering-resistant-stp-adhesive-sealant-multipurpose-low) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-11-10*