Leakproof, PP caps and interchangeable cap adapters provide a wide range of top connection configurations. Each cap is compatible with several adapters allowing you to change and configure carboy top connections based on your application requirements. Designed to be stackable, the caps feature large grips allowing you to easily open and tighten, and include platinum-cured silicone gaskets. Adapters are available with quick connect hose barb options including two, three, or four port combinations