- Our splice kits provide a permanent water-resistant seal that eliminates expensive crimping tools when splicing aluminum or copper conductors. These splice kits are specifically intended for direct burial applications and designed to eliminate any cable deterioration and other problems that can lead to open circuits and cable failure. Our splice kits are labor savings solutions that meet or exceed the electrical contractors requirements and can easily encapsulate 18 to 1/0 AWG multi-conductor wire splices as well as single service conductors up to 250 kcmil. Heating the heat shrink tubing over the mechanical connector melts the adhesive to the cable sealing the splice from moisture and provide insulation and protection. Only a standard screwdriver is required to terminate the wire into the mechanical connector.