Tefzel vs. Kapton vs. Silicone Wire: What’s Best for Your Aircraft?

When it comes to aircraft wiring, choosing the right insulation type isn’t just about performance — it’s about safety, reliability, and regulatory compliance. Three of the most common wire insulation types found in aviation are Tefzel, Kapton, and Silicone. But which one is right for your aircraft?

In this guide, we’ll break down the key differences and use cases of each wire type to help you make the best decision for your next maintenance, upgrade, or build project.