West System – 406 Colloidal Silica Adhesive Filler

10.5022.00 ex. VAT

WEST SYSTEM – 406 Colloidal Silica (like Cabosil), Adhesive Filler

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406 Colloidal Silica is an epoxy thickening additive used to control the viscosity of the epoxy. It prevents epoxy runoff in vertical and overhead joints. This is a very strong filler. It creates a smooth mixture, ideal for general epoxy bonding and filleting. It is also our most versatile epoxy filler. Often used in combination with other fillers, 406 can be used to improve the strength, abrasion resistance, and consistency of epoxy fairing compounds. The result is a tougher, smoother surface. You can blend it into any WEST SYSTEM® 105 Epoxy Resin®/200 Series Hardener combination, G/flex® Epoxy 650, or G/5® Five-Minute Adhesive.


  • Fillets
  • General Bonding
  • Abrasion Resistance
  • Structural Fortification
  • Thickening


Thicken blended resin/hardener and create a multi-purpose adhesive for:

  • Smooth Finishes
  • Overhead or Vertical Applications
  • Increasing strength of fairing compounds
  • Joints


  • Color | Off-White
  • Cures to Off-White


Product Documents

Product Documents