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402 Milled Glass Fibre Blend

Adhesive Filler

WEST SYSTEM® 402 Milled Glass Fibre Blend is a high-density blended filler consisting of loose chopped glass and other fillers intended for small semi-structural repairs, filling voids, or small-scale impact damage to glass fibre laminates. The finished repairs are incredibly strong, tough, and resilient.

When mixed with WEST SYSTEM epoxy at a ratio of approximately 25% by weight, the result is a thick paste that can be carefully stippled into place with a brush and can be held in place with PVC tape or peel ply to give a smooth finish to the repair. In the marine world, typical uses include deep void repair due to osmotic damage; damage to dinghy rudders and centre boards, and hard edge impact damage on small sailboats.

402 Milled Glass Fibre Blend Designed for:

  • Wood Bonding
  • Adhesion
  • Gap Filling
  • Penetrating Wood Fibres
WEST SYSTEM| image: 402 Filler


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

  • Marine
  • Boat Repair
  • Bonding
  • Semi Structural Marine Repairs
  • Filling voids


  • Colour | Off-White
  • Cures to off-white colour
  • Fine fibre blend (consists of chopped glass and other fillers)


  • 402-1 | 150g Milled Glass Fibre Blend
  • 402-2 | 1kg Milled Glass Fibre Blend

Filler Facts


Modifying with fillers and additives makes WEST SYSTEM epoxy extremely versatile for a wide variety of bonding and coating applications. Epoxy can be thickened to the ideal consistency needed for a particular job. Epoxy thickened with adhesive (high-density) fillers strengthens structural bonds, bridges gaps, and fills voids. Epoxy thickened with fairing (low-density) fillers is easily sanded and shaped after it cures.

Bonding with Fillets

Epoxy fillets can make a bond between components even stronger than the components themselves, ensuring that loads can be transferred between structures and panels effectively, with no risk of stress fractures or other structural issues.

Using WEST SYSTEMFillers & Additives