Akfix PA370 Fast Cure PU Wood Glue D4 500g is a one-component, moisture-curing polyurethane wood adhesive built for jobs where ordinary white PVA glue simply fails. Classified D4 to DIN EN 204 — the highest water-resistance grade in the European standard — this waterproof marine wood glue holds its bond through rain, humidity, steam and full immersion. It bonds timber to timber, and timber to metal, concrete, stone, foam and most plastics, with a fast cure and a press time as short as 15–20 minu..