Sika Sikaflex 291 LOT Slow Cure Adhesive Sealant 10.3oz(300ml) Cartridge - Black

Sikaflex® 291 LOT is a premium marine-grade adhesive and sealant engineered for boat maintenance and construction. This versatile, slow-curing polyurethane elastomer delivers exceptional bonding strength and durability, making it ideal for a wide range of marine applications both above and below the waterline.

Key Features

• Suitable for use above and below the waterline
• Resistant to salt water and harsh marine environments
• Paintable and sandable for seamless finishes
• Provides an excellent bond for various materials
• NSF approved for potable water applications
• USDA approved for incidental food contact
• Non-sag formula with a long open time for extended work periods

Ideal Applications

Sikaflex® 291 LOT is perfect for general all-purpose sealing and bonding tasks in marine settings. Its high-strength formulation is suitable for light-duty bonding projects that require a prolonged open time, especially in humid climates or tasks that demand extra time. The adhesive remains permanently elastic, ensuring lasting flexibility and performance in dynamic marine environments.

Technical Specifications

Component	1-component
Curing Method	Moisture cured
Package Size	10.3oz (300ml) Cartridge - Black
Open Time	Extended open time for complex or lengthy applications
System Type	Non-sag

Safety Information

WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit P65Warnings.ca.gov.

Additional Resources

Quick Guide (PDF)

Orders of physical products placed by 3 PM EST M-F typically ships the same day, if all requested items are in stock. Weekend orders will typically ship on Monday.

Shipping takes 2-7 days.

We currently ship to the Contiguous 48 States.

Life of Sailing merch is custom made for the customer after an order is placed. Total turnaround is typically 7-14 days from order to doorstep.