For sealing the scupper holes for spilled oil or polluted liquids. Easy to use, insert plug in the drain hole and tighten the handle until a slight resistance is felt, the rubber plug will be expanded and held firmly in place. Rubber parts are made of oil resistant rubber (CR). Seven types are available according to the pipe size. Specify the applicable drain pipe diameter when ordering, referring to the plug application list. 

用于密封溢油或污染液体的泄水孔。使用方便，将塞子插入排水孔并拧紧手柄，直到感觉到轻微阻力，橡胶塞将膨胀并牢牢固定到位。橡胶件由耐油橡胶（CR）制成。根据管道尺寸可提供七种类型。订购时，请参考塞子应用列表，指定适用的排水管直径。