Alongside Tecbond 248, Tecbond 280 is an all-purpose hot melt adhesive designed to provide excellent bonds to a wide range of materials including wood, metal, glass, ceramics, concrete, and most plastics. Tecbond 280 however, has a longer open time and working time than Tecbond 248. The adhesive will stay tacky for up to three minutes after application. Even after compression, small adjustments can be made before the final bond is formed.