SikaFast 3131 S Flexible Methacrylate Adhesive

More Information About SikaFast 3131 S

The SikaFast 3131 S structural adhesive is a two-component, fast-curing acrylic glue that has a methyl methacrylate (MMA) formulation with integrated spacer shims to maintain a uniform bond thickness of 0.027 to 0.033 inches. With a 10:1 mix ratio, the SikaFast 3131 S acrylic adhesive comes in a 490 mL (16.5 fl. oz) cartridge.

SikaFast 3131 S offers an open time of 7 minutes which is ideal for quick fixturing in high-throughput applications. It also provides excellent adhesion to various substrates like metals and fiber-reinforced polymers. Its rapid strength development and high flexibility also make the SikaFast 3131 flexible adhesive suitable for demanding bonding applications where durability and impact resistance are critical.

Features and Benefits

• Fast Curing: Strength develops within minutes, perfect for high-throughput applications
  
• Spacer Shims: Ensures consistent bond thickness of 0.027 to 0.033 inches
  
• Excellent Adhesion: Bonds effectively to metals, polymers, and composites with limited surface preparation
  
• High Flexibility: Superior flexibility at low temperatures for enhanced durability
  
• Impact Resistant: Provides good strength and impact resistance under stress
  
• Mix Ratio 10:1: Ensures consistent application through static mixers
  
• 490 mL Cartridge: Ideal for large-scale bonding applications

SikaFast 3131 S Specifications

• Series: SikaFast 3131 S
  
• Type: Acrylic Structural Adhesive
  
• Chemistry: Methyl Methacrylate
  
• Application: Bonding
  
• Substrates: A Variety of Substrates, Including Aluminum, Stainless or Galvanized Steel, and Fiber Reinforced Polymers
  
• Color (Mixed): Straw
  
• Cure Mechanism: Radical Polymerization
  
• Cartridge Size: 490 mL (16.5 fl. oz)
  
• Density (Mixed): 8.3 lb/gal (0.99 kg/l)
  
• Mix Ratio: 10:1
  
• Consistency: Thixotropic Paste
  
• Application Temperature: 50°F to 95°F (10°C to 35°C)
  
• Open Time: 7 Minutes
  
• Peak Exotherm Time / Temperature: 17 Minutes / 194°F (90°C)
  
• Shore D Hardness: 65
  
• Tensile Strength: 1,300 psi (9 MPa)
  
• Elongation at Break: 50%
  
• E-Modulus: 14,500 psi (100 MPa)
  
• Tensile Lap-Shear Strength: 1,500 psi (10.5 MPa)
  
• Service Temperature: -22°F to 176°F (-30°C to 80°C)
  
• Shelf Life: 9 Months
  
• Storage Temperature: Below 72°F (22°C) - Protect from Direct Sun Light
  

Applications

The SikaFast 3131 S is glue ideal for fast bonding and securing concealed joints. It replaces or complements mechanical fasteners like rivets or screws and bonds well to metals and reinforced polymers. Together these properties make it suitable for high-strength applications in automotive, industrial, and construction settings.

Other SikaFast 3131 S Sizes Available

SikaFast 3131 S 45 Gallon Drums and 4.5 Gallon Pails