Ancor 310499 Marine Grade Electrical Nylon Insulated Adhesive Lined Heat Shrink Ring Terminals (22 to 18-Gauge, Size 1/4 Screw, 100-Pack)
Ancor heat shrink connectors offer heat activated adhesive built into the sleeve of the heat shrink tubing. When heated, these connectors form a water tight seal and the ultimate vibration and strain relief.