3/4″ and 2″ Tab Seal Crimping Tool To use a 3/4″ or 2″ Tab Seal Crimping Tool, first place the Tabseal cap on the container. Then, insert the crimping tool over the tab seal cap and align the jaws of the tool with the crimp ring. Next, close the jaws of the tool until the crimp ring is securely crimped onto the container. Finally, inspect the crimp to ensure that it is tight and even. Tamper-evident: Tabseal caps are tamper-evident, which means that they cannot be opened without leaving visible evidence of tampering. This helps to protect the contents of the container from unauthorized access. Leak-proof: Tabseal caps are leak-proof, which helps to prevent leaks and spills. This is important for containers that are transporting hazardous materials or perishable goods. Easy to use: 2″ Tabseal crimping tools are easy to use and require no special training. This makes them a good choice for a variety of applications.