Sika 291 sealant 85g

Sikaflex-291: The Ultimate All-Purpose Marine Sealant & Adhesive (85g)

Ensure the integrity and seaworthiness of your vessel with Sikaflex-291, the globally trusted, high-performance sealant and adhesive designed specifically for the demanding marine environment. This convenient 85g tube is an essential component for every boater´s toolkit, perfect for a wide range of onboard sealing applications, from minor repairs to critical installations. Trusted by professionals and DIY enthusiasts alike, Sikaflex-291 provides a reliable, long-lasting solution for keeping water out and components securely in place.

Unmatched Versatility for All Your Boating Needs

Sikaflex-291 is a true multi-purpose workhorse. Its formulation is engineered to create tough, durable, and watertight seals on a vast array of surfaces commonly found on boats. Whether you are bedding deck hardware, sealing through-hull fittings, installing portholes and hatches, or creating flexible, waterproof joints, this is the one product you can depend on. Its excellent adhesion properties ensure a strong, resilient bond to materials including fiberglass (GRP), wood, marine plywood, steel, aluminum, and most marine-grade plastics and paint coatings. This versatility eliminates the need for multiple products, simplifying your maintenance tasks and saving valuable storage space.

Engineered for the Harsh Marine Environment

A boat is constantly subjected to stress from vibration, structural movement, temperature fluctuations, and exposure to the elements. Sikaflex-291 is formulated to withstand these challenges. It cures to form a permanently elastic seal that can absorb shocks and vibrations without cracking or losing adhesion, a critical feature for components on a moving vessel. Furthermore, it exhibits outstanding resistance to saltwater, freshwater, and weathering, ensuring it will not degrade or fail when exposed to harsh sun, spray, and constant moisture. This robust durability provides peace of mind that your seals will remain effective season after season.

Professional Finish with User-Friendly Application

Achieving a clean, professional result is simple with Sikaflex-291. As a one-component, moisture-cured sealant, it is ready to use straight from the tube with no complex mixing required. Its consistency allows for easy tooling and a smooth, clean bead. Once cured, the sealant is both sandable and paintable, allowing you to seamlessly blend your repair or installation with the surrounding surfaces for a flawless, factory-quality finish. The low-odor formula also makes it more pleasant to work with, especially in enclosed cabin spaces. This 85g tube is perfectly sized for smaller jobs, emergency repairs, or for boaters who want the power of Sikaflex in a compact, easy-to-store package.

Key Applications Include:

* General purpose interior and exterior sealing.
* Bedding and sealing of deck fittings, cleats, and hardware.
* Sealing and bonding of hatches, portholes, and windows.
* Creating watertight seals for through-hull fittings and transducer installations.
* Sealing chainplates and stanchion bases.
* Minor bonding applications where flexibility is required.

Protect your investment and ensure every journey is a safe one. Choose Sikaflex-291 for a reliable, flexible, and incredibly durable seal you can count on