{"product_id":"sikaflex-291lotbk-291-lot-marine-polyurethane-adhesive-sealant-black-11-oz-cart-884-291lotbk","title":"Sikaflex 291 LOT Marine Adhesive \/ Sealant – Black, 11 oz. Cartridge (884-291LOTBK)","description":"\u003ch2\u003eSikaflex 291 LOT Marine Adhesive \/ Sealant – Black, 11 oz. Cartridge\u003c\/h2\u003e\u003cp\u003eSikaflex 291 LOT Black is a one-component, moisture-curing polyurethane adhesive and sealant with an extended open time and reduced surface tack compared to standard Sikaflex 291. The longer working window makes it easier to tool joints, position hardware, and clean up squeeze-out before the material skins — a real advantage on larger sealing runs or in warm conditions where standard 291 cures quickly.\u003c\/p\u003e\u003cp\u003eThe black colour makes it the natural choice wherever a dark or invisible sealant line is preferred: black hull seams, dark rub rails, teak deck seams, and black-trimmed hardware. Slightly more flexible than standard 291, it cures to a durable, paintable, watertight seal resistant to UV, saltwater, and fuel splash.\u003c\/p\u003e\u003ch3\u003eCompatible Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBlack hull seams and below-waterline sealing\u003c\/li\u003e\n\u003cli\u003eThrough-hull fittings on dark or black hulls\u003c\/li\u003e\n\u003cli\u003eTeak deck seams\u003c\/li\u003e\n\u003cli\u003eBlack rub rail bedding and installation\u003c\/li\u003e\n\u003cli\u003eDeck hardware bedding where a dark sealant line is preferred\u003c\/li\u003e\n\u003cli\u003ePortlights and cabin windows with black frames\u003c\/li\u003e\n\u003cli\u003eGeneral above- and below-waterline sealing on fiberglass, wood, and metal\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOne-component — no mixing required\u003c\/li\u003e\n\u003cli\u003eLOT formula — longer open\/working time than standard Sikaflex 291\u003c\/li\u003e\n\u003cli\u003eSlightly more flexible than standard 291 — ideal for moving joints\u003c\/li\u003e\n\u003cli\u003eMoisture-activated cure\u003c\/li\u003e\n\u003cli\u003ePaintable after cure\u003c\/li\u003e\n\u003cli\u003eResistant to UV, saltwater, and fuel splash\u003c\/li\u003e\n\u003cli\u003e11 oz. (310 ml) standard cartridge — fits standard caulking guns\u003c\/li\u003e\n\u003cli\u003eSKU: 884-291LOTBK\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eRelated Products\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/sikaflex-291lotwh-291-lot-marine-polyurethane-adhesive-sealant-white-11-oz-cart-884-291lotwh\"\u003eSikaflex 291 LOT White – 11 oz. Cartridge\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/sikaflex-291bk-291-marine-polyurethane-adhesive-sealant-black-11-oz-cartridge-884-291bk\"\u003eSikaflex 291 Black – 11 oz. Cartridge (standard formula)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/sikaflex-291wh-291-marine-polyurethane-adhesive-sealant-white-11-oz-cartridge-884-291wh\"\u003eSikaflex 291 White – 11 oz. Cartridge (standard formula)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/sikaflex-292-polyurethane-10-3-oz-cartridge-white-12-case-884-292wh\"\u003eSikaflex 292 Polyurethane – White, 10.3 oz. Cartridge (structural grade)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/sikaflex-sik205-primer-250-ml-6-case-884-sik205\"\u003eSikaflex 205 Primer – 250 ml\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eParts Desk Insights\u003c\/h3\u003e\u003cp\u003eChoose the 291 LOT Black when colour match matters and you need extra working time — teak deck seams, black rub rails, and dark hull seams are the primary use cases. The extended open time is especially useful in warm weather when standard \u003ca href=\"\/products\/sikaflex-291bk-291-marine-polyurethane-adhesive-sealant-black-11-oz-cartridge-884-291bk\"\u003eSikaflex 291 Black\u003c\/a\u003e can skin before you’ve finished tooling a long seam. If working time isn’t a concern and you just need a black sealant, standard 291 Black cures faster. For structural bonding in black, check whether \u003ca href=\"\/products\/sikaflex-292-polyurethane-10-3-oz-cartridge-white-12-case-884-292wh\"\u003eSikaflex 292\u003c\/a\u003e (available in white) meets your strength requirements. Pair with \u003ca href=\"\/products\/sikaflex-sik205-primer-250-ml-6-case-884-sik205\"\u003eSikaflex 205 Primer\u003c\/a\u003e on porous or difficult substrates.\u003c\/p\u003e","brand":"LNS","offers":[{"title":"Default Title","offer_id":51250760777764,"sku":"884-291LOTBK","price":17.69,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/301-90927.jpg?v=1786509717","url":"https:\/\/marisolmarine.com\/products\/sikaflex-291lotbk-291-lot-marine-polyurethane-adhesive-sealant-black-11-oz-cart-884-291lotbk","provider":"Marisol Marine Company","version":"1.0","type":"link"}