Caps are used to prevent fluid leakage from a container filled with fluid. For fluid containers that are dispensed through various dispense apparatuses, the caps are designed to enable drawing the fluid out of the fluid container while the fluid container is connected to a dispensing apparatus. Some caps reseal once the fluid container is disconnected from the dispensing apparatus to prevent spillage. Furthermore, the caps are used to prevent the fluid inside the fluid container from being contaminated with dirt or other substances that can reduce the fluid quality.
Known dispensing apparatuses rely on gravity to pump the fluid from the fluid container through the cooler to the faucet of the dispensing apparatus. Thus the fluid container must be connected to the top of the dispensing apparatus. Some fluid containers comprise a sealing component that is removed before the fluid container is connected to the dispensing apparatus. Some of these sealing apparatuses are removed when the fluid container is connected to the dispensing apparatus. When the sealing apparatus is removed by a rigid tube, the fluid container is placed on the top of the dispensing apparatus and the force of gravity pushes the fluid container down on the rigid tube. When the rigid tube comes in contact with the sealing component, the rigid tube pushes out or breaks the sealing element so that fluid may flow into the dispensing apparatus.
Some capping apparatuses, such as the commercially available cap of Scholle provide for a silicon cap attached to a retaining ring. The silicon cap is flexible and comprises an aperture via which a pin enters to allow passage of fluid via the silicon cap.