G-7 Glass Silicone Tube

Welcome to learning about the G-7 glass silicone tube.

The G-7 glass-silicone tube is an industrial composite tube made from high-performance silicone resin and a woven fibreglass substrate. It is a flame-resistant material featuring a low dissipation factor with high heat and superior arc resistance. Glass-silicone materials like G-7 work well in wet or dry conditions and are ideal for applications needing solid mechanical and electrical properties.

Advantages

Below are the reasons for using G-7 glass-silicone tubes, such as its key properties and benefits.

Extreme Temperature Resistance:

G-7 is one of the highest-rated NEMA laminates for heat. It has a continuous operating temperature rating of 220°C.

Excellent Electrical Insulation

It maintains a high dielectric breakdown voltage and has a greatly low dissipation factor, making it perfect for high-frequency electrical environments.

Superior Arc and Flame Resistance

The silicone resin matrix gives G-7 excellent arc-tracking resistance and self-extinguishing flame properties, usually meeting UL 94V-0 standards.

Mechanical Strength

At room temperature, G-7 is mechanically weaker and more brittle than epoxy glass grades like G-10 or FR4. However, it retains its strength much better at high temperatures, outperforming other materials once heat crosses 400°F.

Applications

Many industries, including washers, spacers, bolt sleeves, split sleeves and bolt insulators for arc furnace applications, use G-7 glass-silicone tubes.

Typical Properties of G7