--- product_id: 47904792 title: "Sikaflex 291i 300ml" brand: "sika" price: "170 zł" currency: PLN in_stock: true reviews_count: 13 category: "Sika" url: https://www.desertcart.pl/products/47904792-sikaflex-291i-300ml store_origin: PL region: Poland --- # Marine-grade waterproof sealant Fast curing for quick fixes Strong polyurethane bond Sikaflex 291i 300ml **Brand:** sika **Price:** 170 zł **Availability:** ✅ In Stock ## Summary > ⚓ Seal your success with marine-grade precision! ## Quick Answers - **What is this?** Sikaflex 291i 300ml by sika - **How much does it cost?** 170 zł with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/47904792-sikaflex-291i-300ml) ## 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 - • **Clean and easy use:** Smooth paste formula in a convenient 300ml cartridge for mess-free application - • **Versatile application:** Perfect for fibreglass, plastic, and door surfaces—one sealant for all your needs - • **Leak-proof marine strength:** Seals and bonds quickly to keep your vessel dry and secure - • **Durable waterproof protection:** Engineered to withstand harsh marine environments without fail - • **Trusted quality from Switzerland:** Backed by 4.6-star reviews and global reliability for professional results ## Overview Sikaflex 291i White is a professional-grade polyurethane adhesive sealant designed specifically for marine applications. It offers fast curing, strong waterproof bonding on fibreglass and plastic surfaces, and comes in a convenient 300ml cartridge. Trusted worldwide and highly rated, it ensures durable, leak-proof seals that withstand tough marine conditions. ## 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: Blimey, this is proper sticky! - Problem. Modern close couple WC, syphon is glued in place, within cistern, but starts leaking, adhesive has broken down prematurely. Most silicone sealants are not suitable for full immersion, fish tank sealant not readily available locally. Solution. Marine sealant. Sikaflex products are very good, as I have used automotive sealants before. Its not expensive, by comparison to high performance silicone. It is hard to squeeze out with a gun, next time I'd probably warm it up a little. Once cured, job seems to be done. I have used it for a number of other of little leaky bits, here and there. Would imagine it would be put to a whole range of waterproofing and sealing tasks. so yes, a recommendation. Review: A marine quality sealant - Ideal marine quality sealant that will stop those annoying leaks. Easy to apply. Reasonable price. Waterproof. ## Features - Contains isocyanates. May produce an allergic reaction. - May cause an allergic skin reaction. - Warning! Hazardous respirable droplets may be formed when sprayed. Do not breathe spray or mist. - Seals and bonds quickly and cleanly - Available in black or white - Sikaflex - White - 300ml ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B004X7PEL6 | | Best Sellers Rank | 183,640 in DIY & Tools ( See Top 100 in DIY & Tools ) 40 in Adhesive Caulk | | Brand | Sika | | Colour | White | | Compatible Material | Fibreglass | | Country Of Origin | Switzerland | | Customer Reviews | 4.6 out of 5 stars 3,410 Reviews | | Global Trade Identification Number | 07612894815009 | | Included Components | 1 cartridge | | Item Dimensions | 48 x 48 x 230 millimetres | | Item Form | Paste | | Item Type Name | Sikaflex 291i Multifunctional adhesive sealant for marine applications | | Item Weight | 0.41 Kilograms | | Item dimensions L x W x H | 48 x 48 x 230 millimetres | | Item weight | 0.41 Kilograms | | Manufacturer | Sikaflex | | Manufacturer Part Number | 291i White | | Material | Silicone | | Model Number | 291i White | | Number of Items | 1 | | Style | Cartridge | | Style Name | Cartridge | | Surface Recommendation | Plastic, doors | | Unit Count | 300.0 millilitre | | Water Resistance Level | Waterproof | | Water resistance level | Waterproof | ## Product Details - **Brand:** Sika - **Item dimensions L x W x H:** 48 x 48 x 230 millimetres - **Item weight:** 0.41 Kilograms - **Material:** Silicone - **Style:** Cartridge ## Images ![Sikaflex 291i 300ml - Image 1](https://m.media-amazon.com/images/I/61HEF2AEOoL.jpg) ![Sikaflex 291i 300ml - Image 2](https://m.media-amazon.com/images/I/71u19uMva9L.jpg) ![Sikaflex 291i 300ml - Image 3](https://m.media-amazon.com/images/I/71s9EmRgdEL.jpg) ![Sikaflex 291i 300ml - Image 4](https://m.media-amazon.com/images/I/71kYILE-m3L.jpg) ![Sikaflex 291i 300ml - Image 5](https://m.media-amazon.com/images/I/71INa5MbLZL.jpg) ## Questions & Answers **Q: would this be OK to stick my satellite dish to the top of my motor-home without screws?** A: It's a good product but I would not trust it for that, use it along with the screws, just to be on the safe side. Is there not a plate with the dish that you could fix on permanently so that you could easily remove the dish? **Q: Dear, May i know the best before date?** A: Morning. Exp Date of current stock is 09/2023. Hope that helps. **Q: Can I use this to seal a roof vent on my camper? I need to make sure it is completely watertight. Thank you** A: Yes , you can , and it will seal against water ingress, It's also used for sealing deck fittings on a yacht or seagoing motor cruiser. **Q: Would this work for waterproofing cracks in outside concrete steps** A: Probably would, but I would try concrete first of all to fill the gaps, it would look better. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Blimey, this is proper sticky! *by S***T on 16 December 2020* Problem. Modern close couple WC, syphon is glued in place, within cistern, but starts leaking, adhesive has broken down prematurely. Most silicone sealants are not suitable for full immersion, fish tank sealant not readily available locally. Solution. Marine sealant. Sikaflex products are very good, as I have used automotive sealants before. Its not expensive, by comparison to high performance silicone. It is hard to squeeze out with a gun, next time I'd probably warm it up a little. Once cured, job seems to be done. I have used it for a number of other of little leaky bits, here and there. Would imagine it would be put to a whole range of waterproofing and sealing tasks. so yes, a recommendation. ### ⭐⭐⭐⭐⭐ A marine quality sealant *by D***D on 11 July 2025* Ideal marine quality sealant that will stop those annoying leaks. Easy to apply. Reasonable price. Waterproof. ### ⭐⭐⭐⭐ Ok *by A***R on 3 August 2025* This stuff is great for so many boat related jobs! but the biggest issue is it sets solid in the tube!!!! and if you don't use it all at once, it very quickly becomes useless and it's too expensive for that!!!! Perhaps a something to stop this would really help 🤷 ## Frequently Bought Together - Sikaflex White 291i Multifunctional adhesive sealant for marine applications, 300ml - 10 Gauge Marine Wire 10 AWG Marine Grade Wire,10/3 Triplex Tinned Copper Boat Cable,10 Gauge Oxygen-Free Copper Cable for Automotive RV Boat Speakers Solar Outdoors - 30ft - Sika Sikaflex-221 - Black - Multi-Purpose Polyurethane sealant/Adhesive - Creates Permanent Elastic Seal - Sandable/paintable - Non-Corrosive - 10.1 fl oz --- ## 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.pl/products/47904792-sikaflex-291i-300ml](https://www.desertcart.pl/products/47904792-sikaflex-291i-300ml) --- *Product available on Desertcart Poland* *Store origin: PL* *Last updated: 2026-05-31*