Sika Sikaflex 291 Black 10.3 oz Marine Sealant

Sika Sikaflex 291 is a one-component, marine-grade black polyurethane sealant supplied in a 10.3 oz cartridge. Designed for use above or below the waterline, it adheres to wood, fiberglass, metals, and painted surfaces, making it ideal for boat construction and repair. The sealant is resistant to fresh and seawater, diluted acids, and temporarily resists fuels and oils. Non-corrosive, highly elastic, and safe for vibration-resistant joints, it is compatible with standard application tools and can be sanded or overpainted after curing. Suitable for both professional and DIY marine applications.