{"product_id":"west-1832","title":"Sikaflex-291 Marine Sealant Black 300mL Cartridge (SIK-291BLK-300ML)","description":"\u003cp\u003e\u003cstrong\u003eSikaflex-291\u003c\/strong\u003e is the marine industry’s benchmark one-component polyurethane sealant and adhesive — trusted by boatbuilders, yards, and owners worldwide for its outstanding adhesion, flexibility, and long-term durability in the harshest marine environments. This \u003cstrong\u003e300 mL cartridge in Black\u003c\/strong\u003e is ready to use with a standard caulking gun for precise, controlled application.\u003c\/p\u003e\u003ch2\u003eFeatures\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eOne-component moisture-curing polyurethane — no mixing required\u003c\/li\u003e\n\u003cli\u003eExcellent adhesion to fibreglass, GRP, wood, metals, and most marine substrates\u003c\/li\u003e\n\u003cli\u003ePermanently flexible after cure — accommodates structural movement and vibration without cracking\u003c\/li\u003e\n\u003cli\u003eWaterproof and resistant to seawater, UV, and weathering\u003c\/li\u003e\n\u003cli\u003eSuitable for above and below waterline applications\u003c\/li\u003e\n\u003cli\u003ePaintable after full cure\u003c\/li\u003e\n\u003cli\u003eBlack colour — ideal for hull-to-deck joints, portlights, hatches, and dark trim\u003c\/li\u003e\n\u003cli\u003e300 mL cartridge format for use with standard caulking gun\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSKU:\u003c\/strong\u003e SIK-291BLK-300ML\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sikaflex (Sika)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct:\u003c\/strong\u003e Sikaflex-291\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColour:\u003c\/strong\u003e Black\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVolume:\u003c\/strong\u003e 300 mL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFormat:\u003c\/strong\u003e Cartridge (caulking gun application)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChemistry:\u003c\/strong\u003e One-component polyurethane (1C-PUR)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCure Type:\u003c\/strong\u003e Moisture-curing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication Temperature:\u003c\/strong\u003e +5°C to +40°C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSkin-Over Time:\u003c\/strong\u003e Approx. 60 minutes at 23°C \/ 50% RH\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull Cure:\u003c\/strong\u003e Approx. 3–7 days depending on conditions\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eApplications\u003c\/h2\u003e\u003cp\u003eSikaflex-291 is the go-to sealant for a wide range of marine sealing and bonding tasks: hull-to-deck joints, portlight and hatch bedding, through-hull fittings, deck hardware bedding, keel bolt sealing, teak deck seams, and general above and below waterline sealing. Its flexibility and adhesion make it equally suitable for new construction and repair work.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eSurface must be clean, dry, and free of grease before application. Use Sika Primer or Sika Cleaner as recommended for optimal adhesion on difficult substrates. Mask adjacent surfaces before applying. Tool within the skin-over time window. Not suitable for use on polypropylene, polyethylene, or Teflon surfaces without appropriate primer.\u003c\/em\u003e\u003c\/p\u003e","brand":"WEST","offers":[{"title":"Default Title","offer_id":43564269895716,"sku":"SIK-291BLK-300ML","price":25.05,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/Sikaflex-291_Marine_Sealant_Black_300mL_Cartridge_SIK-291BLK-300ML.jpg?v=1776672200","url":"https:\/\/marisolmarine.com\/products\/west-1832","provider":"Marisol Marine Company","version":"1.0","type":"link"}