--- product_id: 47904797 title: "Sikaflex 291i Marine Sealant and Adhesive, White, 70ml Mini Cartridge | Solvent Free" brand: "sika" price: "$48.93" currency: USD in_stock: true reviews_count: 10 url: https://www.desertcart.us/products/47904797-sikaflex-291i-marine-sealant-and-adhesive-white-70ml-mini-cartridge store_origin: US region: United States of America --- # Marine-grade flexibility Water & chemical resistant Multi-surface adhesion Sikaflex 291i Marine Sealant and Adhesive, White, 70ml Mini Cartridge | Solvent Free **Brand:** sika **Price:** $48.93 **Availability:** ✅ In Stock ## Summary > ⚓ Seal your success with the ultimate marine-grade adhesive! ## Quick Answers - **What is this?** Sikaflex 291i Marine Sealant and Adhesive, White, 70ml Mini Cartridge | Solvent Free by sika - **How much does it cost?** $48.93 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/47904797-sikaflex-291i-marine-sealant-and-adhesive-white-70ml-mini-cartridge) ## 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 - • **Customizable Finish:** Available in white, black, or grey and paintable after curing to seamlessly blend with your vessel’s aesthetics. - • **Unmatched Marine Flexibility:** Engineered for dynamic boat environments with superior elasticity to withstand vibrations and movement. - • **Professional-Grade Durability:** Resistant to fresh & sea water, acids, and sewage effluent for long-lasting marine protection. - • **Versatile Multi-Material Bonding:** Seals and adheres flawlessly to wood, metal, ceramics, and plastics—your all-in-one repair solution. - • **Precision Application in Compact Form:** 70ml mini cartridge designed for easy handling and exact dosing—no waste, just perfect seals. ## Overview Sika Sikaflex 291i is a high-performance, moisture-curing polyurethane sealant and adhesive tailored for marine use. Its superior elasticity and strong adhesion make it ideal for internal boat sealing on diverse materials like wood, metal, ceramics, and plastics. Resistant to water, chemicals, and vibrations, it ensures durable, professional-grade repairs. Available in a convenient 70ml cartridge and multiple colors, it offers precision application and customizable finishes for flawless, long-lasting results. ## Description From the manufacturer HOW TO APPLY? Make sure that all the surfaces are degreased and clean. Apply the needed pre-treament. Cut off the tip of the nozzle and apply the sealant with a manual or pneumatic gun. Tool the joint. Sikaflex 291i Marine Sealant and Adhesive Sikaflex 291i Marine Sealant and Adhesive Sikaflex 290 DC PRO Professional Deck Caulking Sikaflex 290 DC PRO Professional Deck Caulking Sikaflex 292i Multipurpose Adhesive Sikaflex 292i Multipurpose Adhesive STRONG SEALS FOR SAFE SAILING OTHER PRODUCTS YOU MIGHT BE INTERESTED IN All-purpose sealant High-strength adhesive Teak deck joint filler Sanitary silicone Everyday silicone sealant Cleaning/Degreasing wipes Sealant remover-smoother Sika your partner for all projects Review: Super quality - I don't know how they managed to do it extra super quality but they really did it. Used it on cracks, perfect solution. Thank you! Review: OK for what I used it for. - I think this did the job, resealing the vapour membrane on BMW doo before refitting the door card. It's NOT an instant grab adhesive but seems to have worked. I left it to cure for 3 days before I fit the card. Only use if ambient temperature is greater than 10c for a few days. ## Features - May cause an allergic skin reaction. - SPECIFICALLY DESIGNED FOR THE MARINE MARKET – Highly flexible adhesive and sealant suited for most internal boat sealing applications. - MULTIPURPOSE – Use it as a sealant or adhesive on wood, metal, ceramics, plastics and more for high grab adhesion and seals. - HIGHLY ELASTIC – This moisture-curing, non-sag 1-component polyurethane sealant and adhesive is highly flexible and works well in areas prone to strong vibrations. - PROVIDES PROFESSIONAL-GRADE RESISTANCE – Resistant to fresh water, sea water, limewater, sewage effluent diluted acids and much more, providing suitability for repairs and maintenance on boats and marine vehicles. - MULTIPLE COLOURS AVAILABLE – Choose from black, white or grey to suit your space, or over-paint it when dry. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00U2JM36S | | Best Sellers Rank | 1,928 in DIY & Tools ( See Top 100 in DIY & Tools ) 46 in Sealers | | Brand | Sika | | Colour | White | | Compatible Material | Ceramic, Metal, Plastic, Wood | | Container Type | Cartridge | | Customer Reviews | 4.4 out of 5 stars 143 Reviews | | Full Cure Time | 24 Hours | | Global Trade Identification Number | 07612895195995 | | Included Components | 1x Cartridge | | Item Form | Liquid | | Item Package Quantity | 1 | | Item Type Name | Sealant and Adhesive | | Item Volume | 70 Millilitres | | Item Weight | 0.45 Grams | | Item form | Liquid | | Manufacturer | Sika Everbuild | | Manufacturer Contact Information | Sika Everbuild 41 Knowsthorpe Way, Leeds LS9 0SW | | Manufacturer Part Number | 9091568 | | Material | Polyurethane | | Model Number | 291 | | Number of Pieces | 1 | | Other Special Features of the Product | Strong | | Special feature | Strong | | Specific Uses For Product | Marine applications | | Specific uses for product | Marine applications | | Tensile Strength | 261.07 Pounds Per Square Inch | | Unit Count | 70.0 millilitre | | Viscosity Level | High | | Water Resistance Level | Water Resistant | ## Product Details - **Brand:** Sika - **Item form:** Liquid - **Material:** Polyurethane - **Special feature:** Strong - **Specific uses for product:** Marine applications ## Images ![Sikaflex 291i Marine Sealant and Adhesive, White, 70ml Mini Cartridge | Solvent Free - Image 1](https://m.media-amazon.com/images/I/51WMlp3dcxL.jpg) ![Sikaflex 291i Marine Sealant and Adhesive, White, 70ml Mini Cartridge | Solvent Free - Image 2](https://m.media-amazon.com/images/I/71FWhZNpwnL.jpg) ![Sikaflex 291i Marine Sealant and Adhesive, White, 70ml Mini Cartridge | Solvent Free - Image 3](https://m.media-amazon.com/images/I/71H8ZE4wSkL.jpg) ![Sikaflex 291i Marine Sealant and Adhesive, White, 70ml Mini Cartridge | Solvent Free - Image 4](https://m.media-amazon.com/images/I/71Vn5q2Q7EL.jpg) ![Sikaflex 291i Marine Sealant and Adhesive, White, 70ml Mini Cartridge | Solvent Free - Image 5](https://m.media-amazon.com/images/I/81soYBuq2vL.jpg) ## Available Options This product comes in different **Color, Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Super quality *by R***D on 15 July 2025* I don't know how they managed to do it extra super quality but they really did it. Used it on cracks, perfect solution. Thank you! ### ⭐⭐⭐⭐ OK for what I used it for. *by M***T on 14 March 2026* I think this did the job, resealing the vapour membrane on BMW doo before refitting the door card. It's NOT an instant grab adhesive but seems to have worked. I left it to cure for 3 days before I fit the card. Only use if ambient temperature is greater than 10c for a few days. ### ⭐⭐⭐⭐⭐ Perfect *by T***Y on 22 October 2021* I used this while fitting a fish finder transducer to the transom of my little rib and it works a treat to seal up the holes and stop water ingress into the wood. Its great stuff, expensive but worth it. Having seen a few people who use bathroom silicone on their boats and then seen how the boats ended up getting damage over a short period, I would strongly recommend not being cheap and getting the proper stuff which this sikaflex is. ## Frequently Bought Together - Sika – Sikaflex 291i – Marine Sealant and Adhesive – Specifically Designed For The Marine Market – Solvent Free – White – 70ml Mini Cartridge - WELLOCKS Assorted Self Tapping Screws | 265 PCS M3/M4/M5 Stainless Steel Screws Assortment Kit | Phillips Flat Head Countersunk Wood Screw Set with Storage Box | for Homemade Repairment Woodwork(D034) --- ## 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.us/products/47904797-sikaflex-291i-marine-sealant-and-adhesive-white-70ml-mini-cartridge](https://www.desertcart.us/products/47904797-sikaflex-291i-marine-sealant-and-adhesive-white-70ml-mini-cartridge) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-08-05*