Epocast 1645 FR A/B is a two component, ultra-low density, flame-retardant epoxy void filler designed for edge filling/reinforcing of honeycomb structures used in aerospace interior applications.

Both Epocast 1645 FR A and B are non-sticky, soft pastes which can be easily mixed and applied manually, both are water-cleanable after its initial application. The combined formula sets quickly at room temperature and is sandable shortly after application. It is well suited for aerospace applications requiring low density, high strength, and rapid component assembly.