A wire connector kit and a method of protecting an electrical connection comprising a wire connector and a source of expandable sealant wherein the expandable sealant is injected into a wire connector after the electrical connection has been formed with the expandable sealant undergoing an in situ internal expansion from a site proximate the electrical connection to encapsulate and protect the electrical junction from the environment or through forming a sealant plug in a housing through an in situ expansion of the sealant plug to protect an electrical connection cocooned within the housing by the sealant plug.