West System A-Pack 1.2kg contains epoxy resin (1kg) and slow hardener (200g).

105 epoxy resin is the base material on which all West System 105 System epoxy compounds are built. The resin is a clear pale yellow low-viscosity liquid epoxy resin. Formulated for use with West System hardeners it can be cured in a wide temperature range to form a high-strength solid with excellent moisture resistance.

206 slow hardener is a low-viscosity epoxy curing agent for use when extended working and cure time is needed or to provide adequate working time at higher temperatures. When combined with 105 Resin in a five part resin to one-part hardener ratio the cured resin/hardener mixture yields a rigid high-strength moisture resistant solid with excellent bonding and coating properties.