Use to electrically connect a (tap) wire end to a through (run) wire, insulate and provide a moisture resistant seal for the connection. Moisture-resistant connection. The 804 connector is greased. Maximum insulation O.D. diameter of .145 inch (3,5mm). The connector shall be rated 600 volts and have a insulation temperature rating of 194(deg)F (90(deg)C). The suggested application tool for this connector is the E-9BM Crimping Tool.