Heat Shrink Tubing 300pcs 1mm Black by ThreeBulls 2to1 Marine Grade

Description

Product Overview

ThreeBulls 300-piece heat shrink tubing is engineered for demanding industrial and DIY environments where reliability, durability, and protection are paramount. Each tube is manufactured from high‑quality polyethylene, offering a 2‑to‑1 shrink ratio that guarantees a snug, seamless fit over wires, connectors, and small components. The black color provides a discreet, professional appearance while the marine‑grade formulation resists moisture, salt, UV exposure, and chemical corrosion, making it suitable for both indoor and outdoor applications.

The tubing dimensions are precisely controlled: a 1 mm (1/24″) inner diameter before shrinking, a wall thickness of 0.2 mm ± 0.05 mm, and a final wall thickness of 0.4 mm ± 0.05 mm after contraction. This ensures consistent performance across the entire batch of 300 pieces. The product operates safely within a temperature range of –30 °C to 125 °C, with an initial shrink activation at 100 °C and full contraction at 110 °C. It can withstand a tensile strength of 12 MPa and a voltage exposure of up to 1000 V, providing an extra layer of safety for high‑voltage wiring projects.

Designed for versatility, the tubing is ideal for protecting solder joints, preventing rust on wire ends, and bundling harnesses in automotive, marine, and aerospace contexts. Its compact size—30 mm (1.2″) length—makes it easy to handle, store, and apply in tight spaces. The package includes 300 individual tubes, offering ample supply for large‑scale repairs or ongoing maintenance tasks.

Usage

Whether you are a professional electrician, a marine technician, or a hobbyist tackling a home‑improvement project, ThreeBulls heat shrink tubing adapts to a wide range of scenarios. In automotive repair, the tubes seal exposed wire ends, protect against vibration, and guard against fluid exposure in engine bays. For marine applications, the waterproof and salt‑resistant properties safeguard connections on boats, docks, and offshore equipment, preventing corrosion that can lead to costly failures.

In residential or commercial wiring, the tubing provides an easy method to insulate splices, reinforce cable terminations, and create a clean, organized appearance for conduit runs. DIY enthusiasts use it for custom LED projects, audio equipment upgrades, and robotics, where precise fit and reliable insulation are essential. The tubes can also be employed in industrial settings for bundling sensor cables, protecting control panel wiring, and sealing pneumatic or hydraulic line connections.

Application is straightforward: select the appropriate tube length, slide it over the prepared wire or connector, and apply heat using a heat gun or a dedicated shrink oven. The material contracts uniformly, forming a tight seal that adheres to the substrate without the need for adhesives. This simplicity reduces installation time and minimizes the risk of errors, making it a preferred choice for both seasoned professionals and newcomers alike.

Why Choose Us

ThreeBulls stands for quality, consistency, and customer satisfaction. Our heat shrink tubing undergoes rigorous testing to meet industry standards for shrink ratio, tensile strength, and temperature resistance. Each batch is inspected for uniform wall thickness and dimensional accuracy, ensuring that every tube performs as expected when heat is applied.

We source premium polyethylene that delivers superior flexibility before shrinking and robust rigidity after contraction. This material choice provides a balance of ease of installation and long‑term durability, even in harsh environments. Our marine‑grade formulation is specifically engineered to resist water ingress, UV degradation, and chemical exposure, extending the lifespan of your electrical assemblies.

Beyond product excellence, ThreeBulls offers responsive after‑sales support. Our technical team is available to answer installation questions, recommend the right tube size for specific projects, and assist with any warranty concerns. We also provide detailed usage guides and safety tips to help you achieve optimal results with minimal effort.

Choosing ThreeBulls means investing in a trusted brand that prioritizes reliability, safety, and value. Our competitive pricing, combined with a generous 300‑piece supply, ensures you have the resources needed for both small fixes and large‑scale installations without compromising on quality.

Key Features

• Premium polyethylene construction delivers a tight, waterproof seal that resists corrosion and UV damage.
• 2‑to‑1 shrink ratio ensures a secure fit on 1 mm wires, providing reliable insulation for diverse applications.
• Marine‑grade formulation offers exceptional durability in salty, wet, and harsh environments.
• Wide operating temperature range (‑30 °C to 125 °C) accommodates both low‑temperature and high‑heat projects.
• Dedicated customer support and detailed installation resources guarantee a smooth experience from purchase to application.

FAQ

What size heat shrink tubing should I choose for a 0.8 mm wire?

For a 0.8 mm wire, the 1 mm (1/24″) inner diameter tube is ideal. When heated, the tubing will shrink to a snug fit, providing a secure seal without excess material.

Can I use this tubing on high‑voltage cables?

Yes. The tubing is rated for up to 1000 V, making it suitable for many high‑voltage applications. However, always verify that the voltage rating matches your specific project requirements.

Is a heat gun required, or can I use a lighter?

A heat gun is recommended because it provides even, controllable heat that ensures uniform shrinkage. While a lighter can work for very small sections, it may cause uneven heating and damage the material.

How many tubes are included in the package?

The package contains 300 individual heat shrink tubes, each 30 mm (1.2″) long, giving you ample supply for extensive repairs or multiple projects.

What warranty does ThreeBulls offer?

ThreeBulls provides a one‑year limited warranty covering material defects. If you encounter any issues, contact our support team for a replacement or refund.