Ancor 321525 Marine Grade™ Heat Shrink Ring Terminals, 5/16" Fastener, 8 Wire, Red, 25/Pk
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
Build a cleaner, more corrosion-resistant electrical connection with Ancor Marine Grade™ heat shrink ring terminals. This red 25-pack is designed for secure strain relief using adhesive-lined tubing that seals when heat is applied.
Key Features
- Marine Grade™ heat shrink ring terminals for sealed, protected connections
- Adhesive-lined heat shrink tubing shrinks to form a tight seal
- Helps provide corrosion resistance at the connection
- Vibration and strain relief for demanding marine wiring installs
- Tinned copper construction for strong electrical performance
Intended Use
- Marine battery, DC, and accessory wiring
- Boat electrical systems requiring ring terminals and sealed terminations
- General marine and off-road wiring where heat-shrink strain relief is preferred
Product Details
- Brand: Ancor
- Model/SKU: 321525
- Alt SKU: 639-321525
- Terminal type: Heat shrink ring terminal
- Ring stud/fastener size: 5/16"
- Wire size: 8 Wire
- Color: Red
- Pack quantity: 25 per pack
- Product type category: Heat Shrink & Adhesive Lined
- Barcode (variant): 091887986532
- Tinned copper terminal construction (as described)
- Adhesive-lined heat shrink tubing for a sealed, tight fit (as described)
Parts Desk Insights
Best Use Case: Use these ring terminals when you want a sealed termination that resists moisture intrusion and provides strain relief—especially for marine battery and accessory wiring ends.
Common Issues: For best results, ensure the wire is stripped to the correct length and fully seated in the terminal before heat-shrinking. Apply heat evenly so the adhesive-lined tubing seals completely; incomplete shrink/uneven heat can leave gaps at the connection.
Related Products & Accessories
- Heat Shrink & Adhesive Lined (browse the category) - Explore matching Ancor heat shrink and adhesive-lined electrical connectors for your specific wire gauge and terminal type.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.