3:1 Adhesive Lined Heat Shrink Tubing | 3mm Black Waterproof (10 Pack)

This is a professional-grade, adhesive-lined heat shrink tubing designed to create a permanent, waterproof, and dust-tight seal on wires, cables, and connections. Each tube is constructed from black polyolefin with a built-in heat-activated inner glue layer, providing exceptional environmental protection and strain relief for critical electrical applications.

Key Features & Specifications:

• Material: Black Polyolefin with Internal Heat-Sensitive Adhesive Lining

• Supplied Diameter: 3mm (Before Shrinking)

• Recovered Diameter: ~1mm (After Shrinking - 3:1 Ratio)

• Length: 10 pieces, each 300mm long (approx. 12 inches)

• Shrink Temperature: 105°C (Activates glue and shrinks tubing)

• Operating Temperature Range: -50°C to +125°C

• Primary Feature: Creates a waterproof, airtight, and corrosion-resistant seal

How It Works & Core Benefits:

1. Dual-Action Seal: When heat is applied, the outer polyolefin sleeve shrinks radially (3:1 ratio) while the internal glue layer melts.

2. Forms a Waterproof Barrier: The molten glue flows and fills gaps around wires and connectors. As it cools, it solidifies into a flexible, rubber-like barrier that blocks moisture, dust, and chemicals.

3. Superior Protection: Offers far greater environmental sealing and mechanical strength than standard heat shrink, preventing corrosion and wire pull-out.

4. Strain Relief: Creates a robust, flexible "boot" at connection points, absorbing vibration and stress.

Ideal Applications:

• Marine & Automotive Wiring: Sealing battery terminals, sensor connections, and exposed splices in engine bays or outdoor environments.

• Outdoor Electronics & Lighting: Waterproofing connections for LED strips, landscape lighting, and security cameras.

• Industrial & Underground Cables: Protecting splices in control wiring, irrigation systems, or underground conduits from moisture ingress.

• Any application requiring a durable, sealed, and professional finish on electrical connections.

Every order at TINKR promises fast shipping to your door, anywhere in New Zealand. Within 1-3 business days. Courier pickups Monday - Friday. Excluding public holidays.

Our standard delivery requires a signature upon receipt, however type any delivery instructions in the box provided during the TINKR check out on how you want your order delivered. For example, No signature required or leave on front porch etc.

While it is possible for many Auckland orders to be delivered the same day, delivery estimates are; North Island - Overnight. South Island and Rural - extra 1-2 days