SikaFast 3121 Methacrylate Structural Adhesive Drum

More About SikaFast 3121 Part A Drums

SikaFast 3121 drums hold the Part A component of a two-part, fast-curing structural methacrylate adhesive system utilizing methyl methacrylate (MMA) technology. Designed to be combined with SikaFast 3081 N Activator (Part B) in a 10:1 mix ratio, this adhesive is available in a 45-gallon drum for large-scale, high-strength bonding applications.

With an open time of 5 minutes, it is ideal for high-throughput production processes, offering superior adhesion to metals and fiber-reinforced polymers. The thixotropic, non-sagging formulation ensures precise application on vertical and overhead surfaces, providing a reliable alternative to traditional mechanical fasteners like rivets or screws. It is available in Dark Gray and Straw and is made for demanding applications that require durability, flexibility, and impact resistance.

SikaFast 3121 Part A is perfect for large-scale bonding applications in combination with its activator. It can bond metals and reinforced polymers and replaces mechanical fasteners in automotive, industrial, and construction settings.

SikaFast 3121 Part A Pails Are Compatible With

• SikaFast 3081 N Activator (Part B) 4.5 Gallon Pail

Features and Benefits

• Fast Curing: Strength develops within minutes, ideal for high-speed production processes
  
• Excellent Adhesion: Bonds effectively to metals, polymers, and composites with minimal surface preparation
  
• High Flexibility: Provides superior flexibility under stress, ensuring durability in demanding environments
  
• Impact Resistant: Delivers excellent strength and resistance to impact forces
  
• 45-Gallon Drum: Suitable for large-scale bonding applications with efficient dispensing

Specifications

• Series: SikaFast 3121
  
• Type: Acrylic Structural Adhesive (Part A)
  
• Chemistry: Methyl Methacrylate
  
• Application: Bonding (Using SikaFast 3081 N Activator)
  
• Substrates: Aluminum, Stainless or Galvanized Steel, Fiber Reinforced Polymers, and More
  
• Color (Mixed): Dark Gray, Straw
  
• Cure Mechanism: Radical Polymerization
  
• Drum Size: 45 Gallons
  
• Density (Mixed): 8.3 lb/gal (0.99 kg/l)
  
• Mix Ratio: 10:1 (With SikaFast 3081 N Activator)
  
• Consistency: Thixotropic Paste
  
• Application Temperature: 50°F to 95°F (10°C to 35°C)
  
• Open Time: 5 Minutes
  
• Peak Exotherm Time / Temperature: 10 Minutes / 195°F (90°C)
  
• Shore D Hardness: 65
  
• Tensile Strength: 1,300 psi (9 MPa)
  
• Elongation at Break: 80%
  
• 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
  

Other Available Sizes

• SikaFast 3121 490 mL Cartridges