Encapsulated in EPDM rubber with a nominal thickness of 125 Mils and a dielectric strength of 240 Volts per Mil. Completely watertight in line splice. Ready for installation, no taping required. Pre-marked end insert allows broad wire range. O-Ring design screw cap inserts. Connector is produced from high strength 6061-T6 aluminum alloy. Rated for 600 Volts, 90° C.