What is one primary use for ceramic fibres?

Ceramic fibres are primarily used as high-temperature insulation materials, particularly in applications that require effective thermal resistance under extreme conditions. They can withstand very high temperatures, making them ideal for environments such as furnaces, kilns, and other industrial applications where thermal insulation is crucial.

In the context of seals for tube enclosures, ceramic fibres provide the necessary insulation to prevent heat loss and protect surrounding materials from the high temperatures that may be present within the tubes. This characteristic is vital in ensuring the efficient operation of heating systems and reducing the risk of thermal degradation in surrounding components.

Other options, while related to insulation or material filling, do not capture the unique high-temperature resistance properties of ceramic fibres. They may serve different functions or be made of other materials better suited for specific applications, such as lower-temperature electrical insulation or structural filling, which are not the primary intended use for ceramic fibres.