Rewiring your submersible well pump? This splice kit makes clean, watertight electrical splices easy for DIYers, well drillers, and pump installers. It’s the only clear splice kit on the market, so you can see every connection as you make it — and catch any future issues fast. The tubing rapidly shrinks around your wire and crimp, forming a permanent, flexible, waterproof barrier that protects deep underground connections for years. Well Pump Splice Kit Trusted by Pump Installers Back40's crystal clear tubing gives pump installers, well servicemen, and DIYers unmatched visibility when connecting the well pump wire. Unlike traditional methods, you can actually see your butt connectors, confirm the quality of the splice, and ensure long-term security for underground systems where water flows and pressure fluctuates — especially in groundwater applications. Compatible with 14, 12, and 10-gauge well pump wire, this kit also supports efficient cooling by creating a sealed, low-profile connection without bulking up the wire wall. It's already included with every full RPS pump kit, but if you're buying a motor or pump end separately, this is a must-have accessory for a proper, lasting install. Water-Tight Seal for Long-Term Protection This premium kit uses heat-activated tubing and sturdy crimp connectors to create a permanent watertight seal. It’s perfect for submersible deep well installs and other water-tight applications. Inside each tube, a special thermoplastic adhesive melts as the tubing rapidly shrinks, locking out moisture and debris for years. Whether you're redoing a submersible pump install or replacing an old splice, this splice kit makes it easy to confirm wire connections before sealing. It’s a trusted tool for rural farmers who want clean, reliable electrical splices that hold up underground.
