Yes, silicone coated fiberglass tape does work and is commonly used for a variety of applications, primarily because of its high-temperature resistance and insulating properties.

Key Benefits of Silicone-Coated Fiberglass Tape:

1. Heat Resistance: The silicone coating significantly improves the heat resistance of the fiberglass material. These tapes can typically withstand temperatures ranging from 500°F (260°C) to 2000°F (1093°C), depending on the specific product.

2. Electrical Insulation: The fiberglass base material offers excellent electrical insulation, and the silicone coating further enhances the tape's ability to resist electrical conductivity. This makes it useful in applications involving electrical systems and wiring where heat is a factor.

3. Durability and Strength: Silicone-coated fiberglass tape is very strong and resistant to abrasion, chemicals, and moisture. It's ideal for sealing, wrapping, or insulating pipes, wires, and other equipment exposed to harsh environments.

4. Flexibility: It’s flexible enough to conform to irregular shapes, making it suitable for a wide range of sealing or insulating tasks, such as wrapping heating cables or exhaust pipes.

5. Flame Retardant: The silicone coating is often flame-resistant, adding another layer of safety to applications where high heat or flame exposure is a risk.

Common Uses:

• Insulation in high-temperature environments: Used in industries like automotive, aerospace, or manufacturing where heat resistance is essential.
• Pipe insulation: To prevent heat loss or protect pipes from high temperatures.
• Electrical insulation: As insulation for cables or wires exposed to heat.
• Fireproofing: As a fire-resistant wrap for various equipment.

Considerations:

• Tensile Strength: While strong, silicone-coated fiberglass tape may not have the tensile strength of metals or other heavier materials, so it may not be suitable for extremely high-stress applications.
• Ease of Handling: It's generally easy to handle and apply, but care must be taken when cutting, as the fiberglass may irritate skin.

In summary, silicone coated fiberglass tape is effective for its intended purposes, especially where heat resistance, insulation, and flame retardancy are required.