For the Leto heat-resistant fabric quality silica fibres are used, which are environmentally non-hazardous. Leto is treated with a mineral-based finish to improve its abrasive resistance and resistance to fraying. Leto is free of asbestos! Leto is recommended for horizontal use, for example, as a welding and grinding curtain in very high temperatures. Leto silicate fabrics have excellent characteristics in handling and resistance to high-temperature loads. Therefore, this fabric is suitable for use as a welding blanket even under extreme conditions. The maximum application temperature is 1000°c, shortly up to 1300°c.