The addition of fiberglass yarn or metal wire into ceramic fiber tape is designed to enhance its performance, durability, and ease of use in high-temperature applications. Here are the key reasons for including these inserts:

1. Improved Mechanical Strength
   Ceramic fiber is highly resistant to heat but can be brittle and lack tensile strength. The reinforcement of fiberglass or stainless steel wire helps strengthen the tape, reducing the risk of tearing or fraying during installation or under mechanical stress.

2. Enhanced Temperature Resistance
   Fiberglass inserts withstand temperatures up to approximately 1000°F (540°C), supporting the ceramic fiber in moderate heat environments. Stainless steel wire inserts provide additional durability in higher-temperature conditions, maintaining integrity even under direct flame exposure.

3. Better Dimensional Stability
   The inserts help the tape retain its shape and structure when exposed to high temperatures, making it ideal for wrapping pipes, sealing furnace doors, or other applications requiring dimensional consistency.

4. Ease of Handling and Installation
   The added reinforcement improves the tape's flexibility and handling characteristics, making it easier to install, sew, or wrap without breaking or shedding fibers.

Common Insert Options:

• Fiberglass Yarn: Offers good tensile strength and cost-effectiveness for general-purpose applications.

• Stainless Steel Wire: Ideal for high-temperature or vibration-heavy environments.

• Inconel Wire: Suitable for extreme heat and corrosive conditions.

Typical Applications:

• Sealing kiln and furnace doors

• Wrapping high-temperature exhausts or pipes

• Insulating boiler components

• Filling expansion joints in thermal equipment

By incorporating fiberglass or metal wire, ceramic fiber tape becomes a more versatile and reliable material for demanding thermal protection tasks.