{"product_id":"sika-sikaflex-291-marine-adhesive-sealant-300ml-cartridge","title":"Sika Sikaflex-291 Marine Adhesive \/ Sealant – 300ml Cartridge","description":"\u003cp\u003e\u003cstrong\u003eSikaflex®-291\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a one-component polyurethane adhesive sealant for marine construction and maintenance applications. This moisture-curing, non-sag sealant is designed for elastic sealing and bonding on common marine substrates, supporting vibration-resistant joints and general-purpose sealing work in marine environments.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eOne-component polyurethane adhesive sealant for marine applications\u003c\/li\u003e\n\u003cli\u003eMoisture-curing formulation\u003c\/li\u003e\n\u003cli\u003eNon-sag consistency for controlled application\u003c\/li\u003e\n\u003cli\u003eElastic, vibration-resistant sealing performance\u003c\/li\u003e\n\u003cli\u003eBonds to a wide variety of substrates used in marine construction\u003c\/li\u003e\n\u003cli\u003eGood aging and weathering resistance\u003c\/li\u003e\n\u003cli\u003eLow odor, non-corrosive formulation\u003c\/li\u003e\n\u003cli\u003eCan be sanded and overpainted after curing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable cellpadding=\"10\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-label=\"Specification\"\u003eChemical Base\u003c\/td\u003e\n\u003ctd data-label=\"Value\"\u003e1-component polyurethane\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-label=\"Specification\"\u003eColor\u003c\/td\u003e\n\u003ctd data-label=\"Value\"\u003eWhite, black\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-label=\"Specification\"\u003eCure Mechanism\u003c\/td\u003e\n\u003ctd data-label=\"Value\"\u003eMoisture-curing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-label=\"Specification\"\u003eDensity (uncured)\u003c\/td\u003e\n\u003ctd data-label=\"Value\"\u003e1.3 kg\/l\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-label=\"Specification\"\u003eApplication Temperature\u003c\/td\u003e\n\u003ctd data-label=\"Value\"\u003e5 to 40 °C (41 to 104 °F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-label=\"Specification\"\u003eSkin Time\u003c\/td\u003e\n\u003ctd data-label=\"Value\"\u003e60 minutes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-label=\"Specification\"\u003eOpen Time\u003c\/td\u003e\n\u003ctd data-label=\"Value\"\u003e45 minutes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-label=\"Specification\"\u003eShrinkage\u003c\/td\u003e\n\u003ctd data-label=\"Value\"\u003e5%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-label=\"Specification\"\u003eShore A Hardness\u003c\/td\u003e\n\u003ctd data-label=\"Value\"\u003e40\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-label=\"Specification\"\u003eTensile Strength\u003c\/td\u003e\n\u003ctd data-label=\"Value\"\u003e1.8 MPa (260 psi)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-label=\"Specification\"\u003eElongation at Break\u003c\/td\u003e\n\u003ctd data-label=\"Value\"\u003e500%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-label=\"Specification\"\u003eTear Propagation Resistance\u003c\/td\u003e\n\u003ctd data-label=\"Value\"\u003e6 N\/mm (35 pli)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-label=\"Specification\"\u003eService Temperature\u003c\/td\u003e\n\u003ctd data-label=\"Value\"\u003e-50 to 90 °C (-58 to 194 °F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-label=\"Specification\"\u003eShelf Life\u003c\/td\u003e\n\u003ctd data-label=\"Value\"\u003e12 months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eCompatible Substrates and Materials\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eWood\u003c\/li\u003e\n\u003cli\u003eMetals\u003c\/li\u003e\n\u003cli\u003eMetal primers\u003c\/li\u003e\n\u003cli\u003ePaint coatings (2-component systems)\u003c\/li\u003e\n\u003cli\u003eCeramic materials\u003c\/li\u003e\n\u003cli\u003ePlastics such as GRP\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eApplication Guidance\u003c\/h2\u003e\n\u003cp\u003eSurfaces should be clean, dry, and free from grease, oil, and dust before application. Sikaflex®-291 can be processed between 5 °C and 40 °C, with optimum substrate and sealant temperature between 15 °C and 25 °C. Tooling and finishing should be completed within the skin time, and adhesion should be verified on actual substrates and application conditions before production use.\u003c\/p\u003e\n\u003ch2\u003eTypical Use Cases\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eElastic joint sealing in marine construction\u003c\/li\u003e\n\u003cli\u003eVibration-resistant sealing applications\u003c\/li\u003e\n\u003cli\u003eInterior sealing in marine assemblies\u003c\/li\u003e\n\u003cli\u003eGeneral-purpose bonding and sealing in boats and marine equipment\u003c\/li\u003e\n\u003cli\u003eSealing around components, panels, and fittings in marine builds\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTarget Industries and Buyers\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBoat builders\u003c\/li\u003e\n\u003cli\u003eMarine repair and maintenance professionals\u003c\/li\u003e\n\u003cli\u003eMarine OEM manufacturers\u003c\/li\u003e\n\u003cli\u003eShipyards\u003c\/li\u003e\n\u003cli\u003eIndustrial sealing and bonding professionals serving marine markets\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePerformance Advantages\u003c\/h2\u003e\n\u003cp\u003eWithin the marine adhesive sealant category, Sikaflex®-291 offers a practical balance of elasticity, substrate compatibility, and weathering resistance. Its non-sag application properties and ability to bond and seal across common marine materials make it a versatile option for professionals handling movement-prone joints and general marine sealing tasks.\u003c\/p\u003e\n\u003ch2\u003eCommon Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eWhat type of product is Sikaflex®-291?\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIt is a one-component polyurethane adhesive sealant for marine applications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eHow does Sikaflex®-291 cure?\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIt cures by reaction with atmospheric moisture.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eCan it be painted after application?\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eYes, it can be overpainted after skin formation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eCan the cured material be sanded?\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eYes, once cured, it can be sanded as required.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eWhat substrates does it bond to?\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIt bonds to materials commonly used in marine construction, including wood, metals, metal primers, paint coatings, ceramic materials, and plastics such as GRP.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eAre there plastics it should not be used on?\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eYes, it should not be used to seal plastics that are prone to stress cracking, such as Plexiglas and polycarbonate.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eWhat is the recommended application temperature range?\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe application temperature range is 5 °C to 40 °C (41 °F to 104 °F).\u003c\/p\u003e","brand":"Perigee Direct","offers":[{"title":"White","offer_id":48543619121406,"sku":"SIKA_291_WHT_300ML","price":12.06,"currency_code":"USD","in_stock":true},{"title":"Black","offer_id":48543619154174,"sku":"SIKA_291_BLK_300ML","price":12.06,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1212\/5762\/files\/us-01-Sikaflex-291-300-ml-02-1x1-000955321-1.webp?v=1783364513","url":"https:\/\/www.perigeedirect.com\/products\/sika-sikaflex-291-marine-adhesive-sealant-300ml-cartridge","provider":"Perigee Direct","version":"1.0","type":"link"}