Chemi-Washer Fabric is a seamed fabric developed to give optimum drainage and long life. Pulp mills operating cantilevered chemi washers needs seamed fabric so that the washer does not have to be cantilevered for fabric change. It is used in chemi washer, where the pulp discharges over a fixed height weir formed by the floor plate and via a flexible apron cloth onto the drainage fabric. Air-tight rubber seals are provided between the hood end panel and the head box roof and sides and the head box floor supports an adjustable rubber strip which forms a seal with the surface of the chemi-washer fabric as it passes on to the head box drain cover.