10x 3ft 3:1 marine heat shrink tubing dual wall adhesive lined waterproof seal

Seal It Once. Seal It Right. 🔥

This 10-pack of marine-grade 3ft heat shrink tubing is built for extreme environments—waterproof, weatherproof, and worry-free. With a 4:1 shrink ratio and internal adhesive lining, it grips and seals your connections tight. Whether you're working on a boat, vehicle, solar project, or outdoor wiring—this is your go-to fix-it-and-forget-it solution.

💡 Key Features:

• ✅ 4:1 Shrink Ratio – Shrinks down to 25% of its original size for a tight, custom fit

• ✅ Dual-Wall Protection – Polyolefin outer + heat-activated adhesive inner

• ✅ Heavy-Duty Adhesive – Melts and bonds for a waterproof seal

• ✅ Marine-Grade Durability – Perfect for boats, trailers, solar installs, and RVs

• ✅ Easy to Use – Shrinks fast with a heat gun or torch

• ✅ High Temp Rating – Withstands up to 257°F (125°C)

📏 Specifications:

• Quantity: 10 pieces

• Length: 3 feet each (approx. 30 ft total)

• Shrink Ratio: 4:1

• Material: Polyolefin with adhesive lining

• Color: Black

• Temp Range: -55°C to 125°C

• Use Cases: Automotive, marine, industrial, electrical, audio, outdoor wiring

What’s Included:

• 🔟 x 3ft 4:1 dual-wall adhesive-lined heat shrink tubing

• Packed neatly for safe, easy storage and use

🚚 Shipping Info:

• Ships out within 1 business day

• Weight: Approx. 1.5 lbs

• Package Size: 12" x 10" x 2"

• Shipping via USPS Ground Advantage, UPS, or FedEx (best rate selected)

⚠️ California Prop 65 Warning:

This product may contain chemicals known to the State of California to cause cancer or reproductive harm.

🛠️ Built for the Pros – Priced for Everyone

Whether you're splicing wires on a boat or cleaning up a car install, this 10-pack of high-performance shrink tubing has your back. Don’t settle for cheap stuff—get the gear that seals right the first time. 💪