If you’ve ever struggled with electrical tape unraveling or messy connections, it’s time to upgrade to heat shrink tubing—a simple, reliable, and professional solution for insulating and protecting your wires. At Delta Electronics, we carry a wide selection of heat shrink tubing for just about any application, and we’re here to help you choose the right kind.
Here’s a quick guide to help you make the right pick:
1. Know Your Shrink Ratio
The shrink ratio tells you how much the tubing will contract when heat is applied. Common ratios include:
- 2:1 – Shrinks to half its original diameter (great for most general-use cases)
- 3:1 or 4:1 – Shrinks even tighter (ideal for sealing uneven surfaces or bulky connectors)
If you’re not sure what you need, bring your wire or connector by the shop—we’ll match you up with the perfect size.
2. Choose the Right Diameter
Always choose tubing with an internal diameter 20–30% larger than your wire or connector. This ensures it slips on easily, but still shrinks down snug when heated.
Tip: If you’re working with bundles of wires or oddly-shaped connectors, go a little bigger and use a higher shrink ratio.
3. Pick the Material Based on the Job
- Polyolefin – The most common and versatile. Durable, flexible, and resistant to chemicals and abrasion.
- Adhesive-lined – Adds a water-tight seal. Perfect for marine, automotive, or outdoor use.
- Colored tubing – Not just for looks! Use color-coding for organization and easier troubleshooting down the road.
4. Use the Right Tools
A basic heat gun works great, but if you’re in a pinch, a lighter or hair dryer can get the job done. Just be careful not to overheat or burn the tubing.
Pro Tip: We sell heat shrink tubing by 48" "sticks" or in convenient multi-size kits, so you can stock up without breaking the bank.
Whether you’re working on your car, customizing an audio setup, or repairing old electronics, heat shrink tubing is one of those small upgrades that makes a big difference.
Need help choosing the right one? Come see us at 1505 8th Street in Harvey! We’ll walk you through the options and make sure you leave with exactly what you need.