West System G/flex is a tough, resilient epoxy engineered for a superior grip to metals, plastics, glass, masonry, fiberglass, and wet and difficult-to bond woods. G/flex is easy to use with a simple 1:1 mix ratio. It has a long open working time of 45 minutes at room temperature. G/flex reaches a working cure in 7-10 hours and a full cure in 24 hours.