The pastins braided by technology of braiding around a core (or cores) or mutipie sieve braid etc. with flexible graphite yarn, have there perfect safe properties on sealing. They are the best composite parts for solving sealing problem. In addition, according to conditions of different corrosive circumstances and customer's demands, the packings can be treaded with inhibitions of corrosin to make their anticorrosive property better. These products are almost suitable to all media, such us: hot water steam, oil, heat-exchanging liquids, acids, alkalis, ammonia, hydrogen, organic solvents, hydrocarbons, low temperature liquids etc.
    They can be applied to the equipments and devices in petroleum, electricity generation, chemical pharmaceutical and light industries.