West System – 407 Low Density Filler (Microballoons)

18.57241.69 ex. VAT

WEST SYSTEM® 407 Low Density Filler is a blended microballoon-based filler used to make fairing putties that are easy to sand or carve. It is reasonably strong on a strength-to-weight basis and cures to a dark red/brown colour.

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407 Low-Density is a blended microballoon-based fairing filler for WEST SYSTEM® Epoxy. Add 407 to a mixture of epoxy resin/hardener to create a fairing putty. It’s easy to sand or carve this putty once it has cured. The filler is reasonably strong on a strength-to-weight basis. Blended with epoxy to a “peanut butter” consistency, it will be easy to fair. The higher the percentage of 407 in your epoxy mix, the easier it will be to fair. You can blend it into any WEST SYSTEM 105 Epoxy Resin®/200 Series Hardener combination.


  • Fairing
  • Carving
  • Thickening


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

  • Large Scale Fairing
  • Fiberglass Repairs
  • Architectural Repairs
  • Autobody Repairs
  • Marine Repairs


  • Blended Microballoon base
  • Color | Red/Brown
  • Cures to Dark Red/Brown


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