Rubber asbestos gaskets are divided into four kinds :high pressure,intermediate pressure,low pressure and oil-resisting.Having temperature resisting range:-100～350℃;pressure-resisting range:：0-5Mpa;pHrange：4-14；they can be installed in media of weak acids alkalis,alts,petroleum,steam,liquefied ammonia and water .These gaskets are applied to sealing different kinds of flanges,valves and vessels.

Asbestos cloth rings(or reinforced by metal wire )with temperature-resisting range-100～450℃，pressure-resisting range:：0-6Mpa;pHvalue range：4-14，are suitable for weak acids alkalis,alts,petroleum,steam,liquified ammonia and water .They are applied to sealing equipments of boilers,reactors and vessels,etc.