Heat shrink wrap is a type of polymer material that is used to create protective covers for electrical connections. This material is designed to shrink and conform to the shape of the connector when heated, creating a tight, waterproof seal around the connector. Heat shrink wrap is commonly used in applications where it is important to protect electrical connections from moisture, dirt, or other contaminants. This wrap is typically cut to size and placed over the connector, and then shrunk into place using heat. This creates a protective covering that protects the connector from damage and ensures reliable electrical performance.