H.B. Fuller FH3911 A/B is a two-component adhesive and encapsulant widely used in casting applications. It belongs to the urethane chemical family and exhibits a transparent color. This product offers various features and benefits, including biocompatibility, clarity, low outgassing, low viscosity, and optical clarity. It is suitable for multiple application areas, such as potting compounds in electrical and electronics packaging and assembly, as well as printed circuit boards (PCBs).