These useful single-wire connectors in a set are ideal for applications where moisture or harsh environmental conditions play a role, such as telephone wires, intercom systems, or in harsh industrial environments for measurement, signal, and control applications. The gel filling of the connector provides long-term protection against liquids and ensures a secure connection for signal lines or for voltages up to 75 V/DC or 50 V/AC. The cables are stripped during the crimping process, establishing the electrical contact. During this process, some gel may escape from the connector, which is dependent on the diameter of the cables used and is completely normal. A parallel crimping tool for connectors is optimal for crimping. The correctly made connection is mechanically stable, moisture-resistant, electrically safe, and shock-resistant.