weaved by long and continuous carbon fiber with high strength and modulus, after softening. Then soak it in PTFE emulsion with graphite powder and certain amount of thermostable lubrication.

the synthetic fibers are protected by indifferent gas in high temperature during the course of process, therefore it nearly can be carbonized. So its chemical property stability, heat conductivity and heat resistance are better than carbon fiber packing, while its flexibility is worse.

it can get good result in high speed, high pressure or liquid sealing with solid particles together with soft metal or other seal packing. Although its price is higher, it is more economic to use this packing than asbestos in view of sealing effect, service life and public hazards prevention.