The purpose of the crimping tool is to form a secure connection that is properly sealed from any gas or moisture, preventing shortages or faulty electrical connections. It allows electricians to form a solderless connection between two wires, or to terminate a strand of wire... Crimp tools are a varied collection of devices used to join materials or components by pressing them together and creating a seal or crimp. One of the most common uses of crimping tools is the attachment of connectors to the end of electrical cables.