A spray arm feed tube assembly for a dishwasher is provided, comprising an elongate tubular member adapted to extend from a sump of the dishwasher, through an interface, and along a tub wall of a tub portion disposed outwardly of the sump. A banding member is operably engaged with the tubular member about the interface, wherein the banding member is adapted to cooperate with the tub portion and at least one separator member, about the interface, to prevent particulate matter from passing into the sump from the tub portion about the tubular member. An associated apparatus and method are also provided.