205 Fast Hardener Half Pint

West System 205 Fast Hardener 

West System 205 Fast Hardener is a high-performance curing agent formulated to pair with West System 105 Epoxy Resin. Designed for fast turnaround projects, this hardener delivers a reliable cure in cooler temperatures and minimizes downtime when quick handling strength is essential. Ideal for fiberglass repair, wood construction, coating, and adhesive applications.

Key Features

• Provides a fast cure at room temperature—ideal when clamping time or turnaround speed matters

• Suitable for use in cooler working conditions

• Produces a clear, high-strength epoxy when mixed with 105 Resin

• Maintains excellent moisture resistance and structural performance

• Designed for coating, laminating, bonding, and general marine repair

• Convenient half-pint size for small to medium projects

• Mix ratio with 105 Resin: 5 parts resin to 1 part hardener (by volume)

Specifications

• Size: Half Pint (approx. 8 fl oz)

• Hardener Type: 205 Fast

• Color: Reddish-Brown

• Use With: West System 105 Epoxy Resin

• Pot Life: Approximately 9–12 minutes at 72°F

• Cure to Solid State: 6–8 hours (approx.)

• Full Cure: 1–4 days depending on temperature