Threaded sealed tubes are are often used when packing heavy or loose objects. The extra weight and movement of these objects can cause other styles of caps to become dislodged from the tube. First, a clear plastic base is applied to one side of the package creating a strong permanent seal. Then, with our state-of-the-art threading process, we apply a smooth deep thread to the open end of the package. Our threaded tube is then paired with a metal threaded cap, giving us the the most secure threaded package in the industry. Threaded sealed bottom plastic tubes ensure that your product does not get lost or damaged while on display, or while being shipped or stored.