Sika Sikaflex® 291 All-Purpose Marine Adhesive and Sealant

Sikaflex® 291 All-Purpose Marine Adhesive and Sealant Overview

Sikaflex® 291 is a high-performance sealant designed for various marine construction applications. It provides elastic, vibration-resistant seals, making it ideal for numerous interior sealing tasks. Sikaflex® 291 offers excellent adhesion to commonly used marine materials such as wood, metals, metal primers, paint coatings (2-C systems), ceramics, and plastics (GRP, etc.). Once cured, it can be easily sanded to meet your specific requirements.

Please note that Sikaflex® 291 is not recommended for sealing plastics susceptible to stress cracking, such as Plexiglas and Polycarbonate. 

Features

• Bonds well to a wide variety of substrates
• Good aging and weathering resistance
• Elastic
• Low odor
• Non-corrosive
• Can be over painted
• Can be sanded
• Listed under NSF ─ Proprietary Substances and Nonfood Compounds

Specifications

• Series: Sikaflex®-291
• Cartridge Size: 300 ml (10.1 fl oz)
• Chemical Base: 1-Component Polyurethane
• Color: White
• Cure Mechanism: Moisture-Curing
• Density (Uncured): 10.8 lb/gal (1.3 kg/l)    
• Non-Sag Properties: Good
• Application Temperature: 41 to 104°F (5 to 40°C) - Ambient
• Skin Time: 60 Minutes @ 73°F (23°C) / 50% r.h.
• Open Time: 45 Minutes @ 73°F (23°C) / 50% r.h.
• Curing Speed: See Product Data Sheet
• Shrinkage: 5%
• Shore A Hardness: 40
• Tensile Strength: 260 PSI (1.8 MPa)    
• Elongation at Break: 500%
• Tear Propagation Resistance: 6 N/mm (35 pli)
• Service Temperature: -58 to 194°F (-50 to 90°C)
  • 4 Hours: 320°F (160°C)
  • 1 Hour: 356°F (180°C)
• Shelf Life: 12 Months - Storage Below 77°F (25°C)

Other Package Sizes Available

3 oz tubes and 600 ml Unipacks available. Please contact us for more information.