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Material & Conductivity: These heat shrink ring connectors are made of tinned red copper with 99.9% purity, ensuring low resistance and stable current. The tin plating prevents oxidation and rust, which often cause poor contact or sparks. Unlike brass, pure copper maintains conductivity under heat or vibration. This material supports reliable performance in marine, automotive, and household wiring. Corrosion resistance extends service life in humid or salt spray environments.
Waterproof Sealing: Each connector uses double-wall heat shrink tubing with an adhesive lining. When heated evenly, the tubing shrinks to one third of its original size and releases hot-melt adhesive. The adhesive fills gaps between wire insulation and terminal barrel, forming a complete seal. This connection is waterproof, dustproof, and moisture-resistant. For boats, trailers, or outdoor lighting, this sealing prevents corrosion and short circuits without extra tape or silicone.
Crimping Reliability: The ring terminals feature brazed-seam copper barrels that resist splitting under high crimping pressure. A proper crimp provides consistent pull-out strength and vibration resistance. The flame-retardant PVC insulation reduces fire risk during overload. Transparent sleeve options (seen in comparable products) allow visual check of wire insertion. These features reduce installation errors and improve long-term connection safety for electrical projects.
Versatile Applications: This 260-piece kit includes four ring sizes (#10, 1/4″, 5/16″, 3/8″) and three wire ranges (AWG 22-16, 16-14, 12-10), color-coded red, blue, yellow. #10 and 1/4″ rings fit automotive studs and battery terminals; 5/16″ and 3/8″ suit marine switches and industrial panels. Users can handle car audio, boat wiring, motorcycle repairs, or home appliances without buying multiple kits. This assortment reduces downtime searching for correct sizes.
Package & Compliance: The set contains 260 pieces in three colors and four sizes, enough for multiple tasks or one large project. Each terminal meets basic electrical safety requirements, including flame-retardant insulation and salt spray resistance. No storage box is included, but sizes are organized for easy access. When paired with a ratcheting crimper, these connectors help achieve standard crimp quality. Contact seller if any material or workmanship defect occurs.

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Features:
This 260-piece heat shrink ring connector set offers reliable, weather-resistant connections for electrical wiring. Each terminal is made of tinned red copper and features double-wall heat shrink tubing with adhesive lining. When heated, the tubing seals tightly against moisture, dust, and corrosion. Suitable for marine, automotive, household, and industrial use.

Specification:
Material: Copper
Color: Red (AWG 22-16), Blue (AWG 16-14), Yellow (AWG 12-10)
Size: #10, 1/4″, 5/16″, 3/8″

Packing List: 260 × Heat Shrink Ring Connectors

Notes:
Manual measurement, please allow slight errors on size.
The color may exist a slight difference due to different screen displays.

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260 قطعة من موصلات حلقة الانكماش الحراري من الدرجة البحرية، أطراف الأسلاك النحاسية المعلبة لـ AWG 22-16، 16-14، 12-10، #10، 1/4، 5/16، 3/8 بوصة، 3 ألوان، 4 مقاسات

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