• Description
  • Quick Links
  • Resources
  • Relevant Videos
  • Faq
  • Related Products
  • Where To Buy

105 Epoxy Resin System

105 Epoxy Resin is a clear and low-viscosity liquid epoxy resin, that offers excellent performance. It is specially formulated to work with any of the four available WEST SYSTEM hardeners. This versatile resin can be cured over a wide temperature range, resulting in a strong bond with exceptional moisture resistance. When mixed in the proper ratio with a WEST SYSTEM hardener, 105 Epoxy Resin becomes a reliable adhesive for various applications.

105 Epoxy Resin is designed to wet out and bond to:

  • Wood fibre
  • Fibreglass
  • Reinforcing fabrics
  • Composite materials
  • Variety of metals
The 105 System From West System Epoxy Featured in A Can


  • Marine
  • Boat Repair
  • Adhesion
  • Fabrication
  • Moulding
  • Furniture
  • Casting

Working Time:

Working time (thin film) is based on which hardener you choose at 25°C:

  • 205 Fast Hardener®: 60 to 70 minutes
  • 206 Slow Hardener®: 90 to 110 minutes
  • 207 Special Clear Hardener®: 85 to 110 minutes
  • 209 Extra Slow Hardener®: 200 to 260 hours

Cure Time:

Based on which hardener you choose, solid-state curing happens in a wide range of durations at 25°C:

  • 205 Fast Hardener®: 5 to 7 hours
  • 206 Slow Hardener®: 9 to 12 hours
  • 207 Special Clear Hardener®: 9 to 12 hours
  • 209 Extra Slow Hardener®: 20 to 24 hours

Product sizes:

  • Mini - 250g
  • Junior - 500g
  • 105-A - 1.0kg
  • 105-B - 5.0kg
  • 105-C - 25.0kg
  • 105-E - 225kg

*These sizes are 105 resins sizes ONLY and exclude hardener sizes.

105 Epoxy Resin System Facts

Surface Preparation

Working on bonding, laminating, filleting, fairing or applying fabrics? Successes of the application are dependant on how well epoxy adheres to the surface to which it is being applied. Find out some key tips and tricks to preparing your surface for application.

Back To Basics

No matter how long you’ve been using epoxy, it’s always worth revisiting the basics to make sure you’re getting them just right. This Trade Secret will provide you with tips and tricks behind dispensing, mixing and adding epoxy filler to minimise waste and get the best results.