Braided packing made of textured HT glass with heat resistance increased to 750°C, and nominal diameter of fibres 6 to 9 micrometres. Special composition of glass and surface treatment result in improved lifecycle at high temperatures. Thanks to texturing, this packing is similar to type 604 – it is elastic, with significant quantities of air trapped between fibres; hence excellent thermal insulation properties.
Used for sealing chambers, driers and furnaces at high temperatures. High chemical resistance of glass fibres allows to use this packing in chemical equipment, and exhaust systems for hot flue and post-reaction gases. This packing is resistant to majority of aggressive chemicals, except for fluoride,