{"product_id":"sikaflex-291bk-marine-polyurethane-adhesive-sealant-black-11-oz-cartridge","title":"Sikaflex 291BK Marine Polyurethane Adhesive \/ Sealant – Black, 11 oz. Cartridge","description":"\u003ch2\u003eSikaflex 291BK – Marine Polyurethane Adhesive \u0026amp; Sealant, Black\u003c\/h2\u003e\u003cp\u003eSikaflex 291BK is a one-component, moisture-curing polyurethane adhesive and sealant built for the demands of the marine environment. Its low-viscosity formula flows readily into joints and irregular surfaces, curing to a durable, flexible, waterproof seal that holds up against UV exposure, saltwater, and constant vibration. The black colour integrates cleanly with dark hull sides, black hardware, teak trim, and rubber components where white or grey would stand out.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOne-component — no mixing, ready to apply\u003c\/li\u003e\n\u003cli\u003eFast cure, medium modulus — flexible bond that moves with the boat\u003c\/li\u003e\n\u003cli\u003eLow viscosity — penetrates tight joints and uneven surfaces\u003c\/li\u003e\n\u003cli\u003eExcellent adhesion to fibreglass, wood, metals, and most plastics\u003c\/li\u003e\n\u003cli\u003eResistant to UV, saltwater, fuel splash, and weathering\u003c\/li\u003e\n\u003cli\u003ePaintable after full cure\u003c\/li\u003e\n\u003cli\u003eBlack colour — suits dark hardware, teak trim, and black hull accents\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatible Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDeck hardware bedding (cleats, fairleads, stanchion bases, pad eyes)\u003c\/li\u003e\n\u003cli\u003eThrough-hull fittings and port lights\u003c\/li\u003e\n\u003cli\u003eHatches, portlights, and windshield frames\u003c\/li\u003e\n\u003cli\u003eTeak trim and dark-coloured hardware installations\u003c\/li\u003e\n\u003cli\u003eGeneral above-waterline sealing and bonding on dark surfaces\u003c\/li\u003e\n\u003cli\u003eAluminum and stainless steel fittings where black finish is preferred\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eParts Desk Insights\u003c\/h3\u003e\u003cp\u003eThe black variant is the go-to choice for installations on dark hulls, black hardware, and teak-trimmed surfaces where white or grey sealant would create an unwanted colour contrast. It’s also commonly used for through-hull fittings and portlights on dark-coloured boats. For the same formula in a different colour, see \u003ca href=\"\/products\/sikaflex-291gr-marine-polyurethane-adhesive-sealant-grey-11-oz-cartridge\"\u003eSikaflex 291GR (Grey)\u003c\/a\u003e or \u003ca href=\"\/products\/sikaflex-291-marine-adhesive-sealant-white-11-oz-cartridge-884-291wh\"\u003eSikaflex 291WH (White)\u003c\/a\u003e. For a smaller single-use quantity, the \u003ca href=\"\/products\/sikaflex-291bk-marine-polyurethane-adhesive-sealant-black-70ml-mini-sausage\"\u003e291BK 70 ml Mini Sausage\u003c\/a\u003e avoids wasted product on small jobs. For UV-critical glazing or window bonding, step up to \u003ca href=\"\/products\/sikaflex-295uv-marine-window-adhesive-white-11-oz-cartridge-295uvwh\"\u003eSikaflex 295UV\u003c\/a\u003e.\u003c\/p\u003e\u003ch3\u003eRelated Products\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/sikaflex-291gr-marine-polyurethane-adhesive-sealant-grey-11-oz-cartridge\"\u003eSikaflex 291GR – Grey, 11 oz. Cartridge\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/sikaflex-291-marine-adhesive-sealant-white-11-oz-cartridge-884-291wh\"\u003eSikaflex 291WH – White, 11 oz. Cartridge\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/sikaflex-291bk-marine-polyurethane-adhesive-sealant-black-70ml-mini-sausage\"\u003eSikaflex 291BK – Black, 70 ml Mini Sausage\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/sikaflex-291-marine-adhesive-sealant-white-70-ml-mini-sausage-884-291wh70ml\"\u003eSikaflex 291WH – White, 70 ml Mini Sausage\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/sikaflex-295uv-marine-window-adhesive-white-11-oz-cartridge-295uvwh\"\u003eSikaflex 295UV – Marine Window Adhesive, White, 11 oz.\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"LNS","offers":[{"title":"Default Title","offer_id":51250760679460,"sku":"884-291BK","price":15.69,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/301-90919.jpg?v=1786509714","url":"https:\/\/marisolmarine.com\/products\/sikaflex-291bk-marine-polyurethane-adhesive-sealant-black-11-oz-cartridge","provider":"Marisol Marine Company","version":"1.0","type":"link"}