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.