







⚓ Seal your marine projects with confidence — don’t let leaks sink your style!
Sikaflex 291i Black is a high-performance polyurethane marine adhesive sealant designed for professional and amateur use. It offers fast strength build-up, excellent waterproofing, and superior bonding above and below the waterline. With paintable and sandable properties, it ensures a durable, clean finish ideal for sealing deck hardware, hull joints, and marine plumbing. Packaged in a convenient 300ml cartridge, it’s the go-to sealant for reliable, long-lasting marine applications.
| Brand | SIKA | 
| Specific Uses For Product | Amateur, Außen, Fachkraft, Innen | 
| Material | Polyurethane | 
| Item Form | Liquid | 
| Special Feature | Hochelastisch, Geruchsarm, Überlackierbar, Emissionsarm | 
| Color | Black | 
| Item Package Quantity | 1 | 
| Package Information | Kartusche | 
| Item Volume | 300 Milliliters | 
| Viscosity | Medium | 
| Full Cure Time | 24 Hours | 
| Water Resistance Level | Waterproof | 
| Unit Count | 10.1442 Fluid Ounces | 
| Viscosity Level | Medium to High | 
| Number of Pieces | 1 | 
| Global Trade Identification Number | 07612894815047 | 
| Manufacturer | Sikaflex | 
| Part Number | 291i Black | 
| Item Weight | 14.2 ounces | 
| Product Dimensions | 1.89 x 1.89 x 9.06 inches | 
| Item model number | 291i | 
| Is Discontinued By Manufacturer | No | 
| Size | 300ml | 
| Style | Cartridge | 
| Volume | 0.3 Liters | 
| Measurement System | Metric | 
| Special Features | Hochelastisch, Geruchsarm, Überlackierbar, Emissionsarm | 
| Batteries Included? | No | 
| Batteries Required? | No | 
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