--- product_id: 19371902 title: "Marine Sealant & Adhesive" brand: "sika" price: "R585" currency: ZAR in_stock: true reviews_count: 13 category: "Sika" url: https://www.desertcart.co.za/products/19371902-marine-sealant-and-adhesive store_origin: ZA region: South Africa --- # Long open working time Marine-grade adhesion Resistant to fresh & saltwater Marine Sealant & Adhesive **Brand:** sika **Price:** R585 **Availability:** ✅ In Stock ## Summary > ⚓ Seal your legacy with marine-grade strength and style! ## Quick Answers - **What is this?** Marine Sealant & Adhesive by sika - **How much does it cost?** R585 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/19371902-marine-sealant-and-adhesive) ## 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 - • **Extended Work Window:** Long open time lets you perfect every seal without rush or mess. - • **Effortless Application:** Compatible with manual, pneumatic, or electric piston guns for smooth, precise use. - • **Resilient & Elastic Seal:** Vibration-resistant, non-corrosive PU formula keeps joints secure in harsh conditions. - • **Paintable & Sandable Finish:** Achieve a flawless, professional look—customize your project with ease. - • **Unmatched Marine Versatility:** Bonds wood, fiberglass, metal—above & below waterline for ultimate durability. ## Overview Sikaflex-291 LOT is a premium white, one-component polyurethane marine adhesive and sealant designed for demanding marine and general-purpose applications. It offers long open time for flexible working, bonds a wide range of materials including wood, fiberglass, and metal, and cures to a durable, elastic, and paintable finish. Resistant to fresh and saltwater, diluted acids, and oils, it ensures lasting protection above and below the waterline. Packaged in a convenient 10.1 fl. oz cartridge, it applies easily with various piston guns, making it the go-to sealant for professionals seeking reliable, high-performance marine-grade adhesion. ## Description If you need a marine-grade sealant that creates a strong, secure bond with a wide array of surfaces commonly found in marine applications, Sikaflex-291 LOT's white sealant is the ideal choice. It's specially designed for use where a long working time is needed, and cooler temperatures can extend the curing period. The typical skinning period is four hours, after which it can be painted for a more professional finish. Sikaflex-291 LOT is a self-leveling marine grade sealant, so you won't need to tool it down for an even surface. 10.1 fl. oz. cartridges fit conveniently on a variety of piston guns. ## Features - IDEAL FOR MARINE APPLICATIONS — Sika 291 adheres to material commonly used in marine construction, such as wood, fiberglass, metal, and metal primers and paint coatings. Use above or below water line - VERSATILE AND DURABLE — It is non-corrosive and highly elastic making vibration-resistant joint seals on decking. Can be used in an array of interior contexts - FORMULATED FOR PERFORMANCE — This one-component polyurethane marine-grade sealant cures upon exposure to atmospheric moisture. The white sealant can be overpainted and sanded without loss of stability - RESISTANT TO BOTH FRESH AND SALTWATER — Will also resist diluted acids and caustic solutions. Provides temporary resistance to fuels, mineral oils, and vegetable and animal fats - EASY APPLICATION — Use a manual, pneumatic, or electric-driven piston gun to apply this one-component polyurethane paste. Surface should be clean and dry prior to application for optimal performance ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B007H2R9SK | | Best Sellers Rank | #14,575 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #12 in Polyurethane Adhesives #35 in Urethane Adhesives | | Brand | SIKA | | Brand Name | SIKA | | Color | White | | Compatible Material | Polyurethane | | Container Type | Cartridge | | Customer Reviews | 4.5 out of 5 stars 333 Reviews | | Full Cure Time | 24 Hours | | Global Trade Identification Number | 00033886000758 | | Included Components | Sealant | | Item Form | Paste | | Item Package Quantity | 1 | | Item Type Name | Adhesive | | Item Weight | 10.1 Ounces | | Manufacturer | Sika USA | | Material | 1-C polyurethane | | Material Type | 1-C polyurethane | | Model | 90925 | | Number of Pieces | 1 | | Other Special Features of the Product | Water Resistant | | Part Number | 90925 | | Special Feature | Water Resistant | | Specific Uses For Product | General All-Purpose, Interior, Marine | | UPC | 033886002707 338860007588 033886000758 033886000741 | | Unit Count | 10.1 Fluid Ounces | | Viscosity Level | Medium to High | | Volume | 300 Milliliters | | Warranty Description | Warranty | | Water Resistance Level | Water Resistant | ## Product Details - **Brand:** SIKA - **Item Form:** Paste - **Material:** 1-C polyurethane - **Special Feature:** Water Resistant - **Specific Uses For Product:** General All-Purpose, Interior, Marine ## Images ![Marine Sealant & Adhesive - Image 1](https://m.media-amazon.com/images/I/51GrKuGzegL.jpg) ![Marine Sealant & Adhesive - Image 2](https://m.media-amazon.com/images/I/71W3MGhJJVL.jpg) ![Marine Sealant & Adhesive - Image 3](https://m.media-amazon.com/images/I/71Aghik0jnL.jpg) ![Marine Sealant & Adhesive - Image 4](https://m.media-amazon.com/images/I/71O5FooI8LL.jpg) ![Marine Sealant & Adhesive - Image 5](https://m.media-amazon.com/images/I/71EIu9LhgXL.jpg) ## Available Options This product comes in different **Color, Size, Number Of Items** options. ## Questions & Answers **Q: Will this work to repair cracks in my pool skimmer? Is it elastic or hard like epoxy when cured?** A: It is elastomeric and should work well for that I would think. I used it to seal the roof seams on a 2015 GMC pickup and it worked great. Keep in mind it is self leveling so it spreads out a bit on its own. **Q: Would this work for adhering rubber matting to a wooden and aluminum boat deck?** A: yes, it would work. A permanent solution would be 3M 5200 sealant. Try a small piece first! **Q: can i use this to attach solar panels to camper roof? pnls weigh 24pnds.** A: I used mine for water proofing sealant while glueing down a metal flang which weighed very little. Not sure about the solar panels **Q: Would this work in a swimming pool. I have a concrete pool that has plexiglass windows in the sides below the water level.** A: I believe so, we use it on the seams of our water slide that's underwater at all times. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by A***R on January 30, 2026* ### ⭐⭐⭐⭐⭐ Review *by B***D on March 2, 2024* ### ⭐⭐⭐⭐⭐ Review *by R***Y on December 18, 2025* ## Frequently Bought Together - Sikaflex-291 LOT, White, Marine Adhesive and sealant, General All-Purpose PU Adhesive with Long Open time, 10.1 fl. oz - Sikaflex-291, White, General All-Purpose Fast Cure Marine Adhesive and sealant. Polyurethane sealant for Boats, 10.1 fl. oz Cartridge --- ## 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.za/products/19371902-marine-sealant-and-adhesive](https://www.desertcart.co.za/products/19371902-marine-sealant-and-adhesive) --- *Product available on Desertcart South Africa* *Store origin: ZA* *Last updated: 2026-05-08*