Waterproof ring terminal for 12–10 AWG stranded copper wire on a 1/4" stud. The adhesive-lined heat shrink sleeve melts and seals around the wire insulation when heated, keeping moisture, salt and road spray away from the crimp. Made in USA.
Use it for: higher-current accessory feeds, fuse block and bus bar connections, winch controls, pumps and inverter remote leads landing on 1/4" studs, bus bars and terminal posts on boats, trailers, trucks and off-road builds, and anywhere a connection sees water or washdown.
Getting the right size: match the wire gauge to the barrel and the ring to your stud. Same 12–10 AWG heat shrink ring terminal for other studs: #8 · #10 · 5/16" · 3/8" · 1/2". Same size, different construction: nylon, vinyl. Not sure of your size? Check the ring terminal size chart.
Priced per piece — order any quantity. See all ring terminals.
• Wire Gauge Range: 12-10 AWG stranded copper only
• Connector Type: Ring Terminal
• Stud Size: 1/4"
• Insulation Material: Dual-wall heat shrink with adhesive lining (3M Type MW polyolefin)
• Temperature Rating: -55°C to 125°C (-67°F to 257°F)
• Waterproof: Yes (when properly heat-shrunk)
• Voltage: 600V
• Terminal Material: Pure copper with tin plating
• Barrel Construction: Brazed barrel for uniform crimping and vibration resistance
• Tubing Type: Translucent semi-rigid polyolefin with adhesive lining
• Installation: Crimp wire, then apply heat gun to shrink and seal
• Seal Type: Adhesive-activated watertight seal
• MADE IN USA
• Marine Electrical Systems - Connect wiring in boats where saltwater exposure requires waterproof connections that prevent corrosion while maintaining quick-disconnect or permanent termination capability.
• Outdoor & Underground Installations - Wire landscape lighting, irrigation systems, and outdoor equipment where moisture, soil chemicals, and weather exposure demand hermetically sealed connections for long-term reliability.
• Automotive Underhood & Exterior Wiring - Connect sensors, relays, lighting, and accessories in engine compartments and exposed locations where heat, oil, moisture, and vibration require waterproof protection beyond standard vinyl or nylon terminals.
• Trailer & RV Exterior Systems - Wire running lights, brake lights, and exterior accessories exposed to road spray, weather, and constant flexing where waterproof connections prevent corrosion and electrical failures.
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