Fasto Flex Fast – Ultra-Fast Curing Flexible Cyanoacrylate Adhesive

Fasto Flex Fast – Ultra-Fast Curing Flexible Cyanoacrylate Adhesive

Fasto Flex Fast is a low-viscosity, modified ethyl cyanoacrylate adhesive developed for very fast bonding across a wide range of substrates, including plastics, rubbers, metals, wood, and certain porous materials. It delivers exceptional cure speed with high bond strength, making it ideal for high-speed assembly lines, precision bonding, and rapid repair applications.

Engineered for close-fitting parts and smooth surfaces, Fasto Flex Fast ensures strong, reliable bonds with minimal adhesive usage and instant handling strength.

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Key Features

  • Modified ethyl cyanoacrylate system
  • Very fast curing performance
  • Low viscosity for precision application
  • High tensile strength
  • Clear, colourless bond line
  • Suitable for porous and non-porous substrates

Benefits

  • Rapid assembly and reduced production cycle time
  • Strong, durable bonds across multiple materials
  • Ideal for emergency repairs and fast-paced manufacturing
  • Clean bonding with controlled adhesive usage
  • Reliable performance on mixed substrate assemblies
Primary Application Sub-Applications Functional Purpose Key Performance Advantage
Plastic Bonding ABS parts, molded components Structural bonding Fast cure, high strength
Rubber Assembly Rubber seals, gaskets Instant joining Extremely rapid fixture time
Metal Bonding Small metal components Precision bonding Strong adhesion, clean bond
Wood Bonding Wooden parts, trims Fast repair & assembly Works on porous surfaces
General Industrial Repair Mixed material parts Maintenance & emergency fixes Immediate handling strength
Precision Assembly Close-fitting components Accurate alignment bonding Low viscosity control

Surface Preparation

  • Ensure bonding surfaces are clean, dry, and free from dust, oil, grease, and contaminants
  • Light surface abrasion may improve adhesion on smooth substrates
  • Ensure correct alignment before application due to extremely fast curing

Application Method

  • Apply a small amount of Fasto Flex Fast to one surface only
  • Join parts immediately and apply firm pressure
  • Hold briefly until handling strength is achieved

Note: Use as little adhesive as possible. Excess application may slow cure speed and reduce bond strength.

Curing Information

  • Fixture time: 2–5 seconds
  • Handling strength: Within seconds
  • Full cure: 24 hours (ambient conditions)

Cyanoacrylate activators may be used to further accelerate cure speed, especially on difficult or low-energy substrates.

Joint & Bonding Guidelines

  • Best results on close-fitting joints
  • Apply in a thin, continuous line
  • Excessive bond gaps will reduce curing speed
  • Low humidity and low temperatures may slow curing
  • Acidic substrates (paper, leather) may cure slower than plastics and rubbers

To access Technical & Safety Documents, please submit your details.








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