When heat is applied to these terminals, the adhesive insulation on the wire side shrinks to seal out out water and contaminants that could cause corrosion. Additional nylon insulation completely covers the electrical connection when mated to help prevent accidental short-circuits with nearby wires and provide durable, chemically-resistant protection. For applications that require easy or frequent maintenance, quick-disconnect terminals join two wires using a male plug and female socket that can be pushed together and pulled apart.