Low cost Poly Plugs for packaging tubes are ideal for many retail package applications. When shelf room is not abundant and hanging is not an option, plugging a round tube with a flat-bottom Poly Plug will increase your space. The flat surface supports the standing or stacking of the tubes. HDPE plastic tube plug styles are stocked in black. Custom colors are available. Looking for another type of top or container, or want to see all of the additional options included with our containers? Please visit our main plastic tube containers page.