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Sika 90929 Sikaflex-291 LOT Marine Polyurethane Adhesive Sealant Mahogany 10.3oz

Manufacturer

Sika

<h3>About Sika: Over a Century of Bonding &amp; Sealing Innovation</h3><p>Founded in 1910 by Kaspar Winkler in Baar, Switzerland, <strong>Sika AG</strong> has grown from a regional chemical manufacturer into one of the world's foremost specialty chemicals companies. With more than 100 years of experience, Sika is a worldwide innovation and sustainability leader in the development and production of systems and products for commercial and residential construction, as well as the transportation, marine, automotive, and renewable energy manufacturing industries. Sika has offices in 103 countries with over 400 manufacturing facilities and more than 33,000 employees worldwide.</p><p>Founded in Switzerland over 100 years ago, Sika has developed into a technology leader for adhesives, sealants, and acoustic applications, tooling, and composite resins — with success founded on strategic core competencies across a vast range of applications with solutions for production, assembly, and repair. Whether you're a professional installer, a collision repair technician, or a dedicated DIYer, Sika's product ecosystem is engineered to meet demanding real-world performance requirements.</p><h3>The Sikaflex® Legacy: World-Leading Sealants &amp; Adhesives</h3><p>Sikaflex® is known as the world's leading brand for elastic one-component adhesives and sealants based on polyurethane (PU) or silane-terminated polymer (STP). Sikaflex® all-in-one sealants have been the choice of the transportation industry globally for interior and exterior sealing, bonding, and waterproofing applications for more than 40 years. The Sikaflex® platform spans everything from body-shop repair and windshield bonding to marine caulking and RV sealing — making it one of the most versatile adhesive sealant families on the market.</p><p>A key part of the Sikaflex® story is its <a href="/13792-sika-caulks-sealants-201788">caulks &amp; sealants</a> lineup. Backed by unrivalled expertise with automotive applications, the advanced Sikaflex® portfolio of one-component adhesives and sealants has been specifically designed to provide a fast, easy solution in the automotive car body repair process. They are safe to use — not only by professionals but also by DIY enthusiasts — as they are free of isocyanates and other hazardous substances.</p><h3>Sika Primers: The Foundation of a Lasting Bond</h3><p>Even the best sealant is only as good as its surface preparation. That's where Sika's dedicated line of <a href="/13792-sika-primers-200810">primers</a> comes in. Sikaflex primers are special materials formulated to improve the bond of Sikaflex urethane sealants when applied to specific substrates. Sikaflex® Primer-260, for example, promotes adhesion of urethane sealants to various metallic, non-metallic, and plastic substrates. Pairing a Sika primer with the appropriate Sikaflex® sealant is a best-practice approach trusted by professionals in automotive, marine, and construction industries alike.</p><h3>Sika for Marine &amp; Composite Repair</h3><p>Sika Marine offers a full line of repair solutions that can be used by repair technicians and conscientious DIY boat owners — including marine sealant and adhesive products for numerous repair applications, as well as products for use in composite repairs. This commitment to marine customers extends to <a href="/13792-sika-fiberglass-aluminum-repair-kits-201958">fiberglass and aluminum repair kits</a>, where Sika's expertise in elastic bonding and chemical formulation translates directly into durable, weather-resistant repairs. Suitable for all construction materials — whether fiberglass, aluminium, or steel — Sika's comprehensive range of marine products meets all your caulking, levelling, bedding, sealing, and bonding requirements.</p><h3>Why Professionals Trust Sika</h3><ul><li><strong>Proven Technology:</strong> The knowledge Sika has acquired through OEM partnerships translates directly into the technologies developed for the aftermarket business, making Sika the leading brand for windshield replacement adhesives.</li><li><strong>Broad Substrate Compatibility:</strong> Sikaflex® all-in-one adhesive sealants bond well to a large variety of materials without primer, offering unique strength and long-lasting durability.</li><li><strong>Safe Formulations:</strong> Many Sika products are free of isocyanates, phthalates, solvents, and silicones — making them safer for professional and DIY use alike.</li><li><strong>Global R&amp;D:</strong> The core of Sika's business is innovation management and the focus on developing quality products and the best solutions for customers.</li></ul>

Part Number

90929
05/31/2036 10:53 PM
Sale Price

$15.57

In Stock (10+)

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Usually delivered within 2 days

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No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

Sikaflex-291 LOT (Long Open Time) is a premium one-component marine-grade polyurethane adhesive and sealant designed specifically for boat building and repair applications. This mahogany-colored formulation provides nearly the same exceptional bonding strength as standard Sikaflex-291 while offering slightly enhanced flexibility and significantly extended working time due to its slower skin-over period.

Key Features:

  • Extended open time allows for precise positioning and adjustments during installation
  • High-strength polyurethane formula creates permanent elastic bonds
  • Excellent adhesion to a wide variety of marine substrates including wood, fiberglass, metals, and composites
  • Superior UV and saltwater resistance for long-lasting durability in harsh marine environments
  • Mahogany color blends naturally with wood teak decks and trim
  • Remains permanently elastic to accommodate structural movement and vibration

Common Applications:

  • General sealing throughout the vessel
  • Bedding deck hardware, cleats, and fittings
  • Sealing hull seams and joints
  • Through-hull fittings and ports
  • Rub rail installation and bonding
  • Bonding and sealing wood components

Sikaflex-291 LOT comes in a convenient 10.3 oz cartridge for use with standard caulking guns, making application quick and easy for both professional boat builders and DIY marine enthusiasts.

Products specifications

Color

Mahogany

Size

10.5 oz.

Fast and easy, would recommend to anyone!!!

Small issue w/ Anco blade... Frame -- smaller access space for blade to be snapped into rod did not allow receiver crescent to be locked in-- Opening is too small.

Good service but taxes and shipping are high please atleast give free shipping

The easiest on line shopping I have experienced ever.

Good

I found the rare part here with you Thank you keep doing good work

Excellent Service. Fast service. Very fast delivery and item was exactly as advertised.

Fast, easy and very competitive prices. The customer service was very good with a quick and helpful response. I will shop here again!

quick and easy

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