SST-S Waterproof Electrical Butt Connectors – Premium Heat Shrink Solder Seal Wire Connectors
High-conductivity tin-plated copper core ensures superior electrical performance with minimal resistance. Dual-wall heat-shrink tubing with adhesive lining creates a waterproof, dustproof, and corrosion-resistant seal for harsh environments. Low-temperature solder ring melts instantly with a heat gun, forming a permanent, vibration-resistant bond without extra tools. Wide compatibility for 22-18 AWG wires, ideal for automotive, marine, and industrial electrical repairs. Flexible polyolefin casing withstands extreme temperatures (-55°C to 125°C) and UV exposure. Precision-engineered insulation prevents short circuits, perfect for trucks, boats, and outdoor wiring. Bulk pricing available—order in volume for unbeatable wholesale savings.