asbestos rubber packing a square sealing material after rolling or weaving, with asbestos cloth; asbestos yarn(or together with metal wire)as the base material and rubber as the jointing material, it is used as sealing material on steam engine (pressure max:80kg/cm2,temperature max:550℃),reciprocating pistons and valve spindles. according to steam temperature, asbestos rubber packing has 4 types: xss550、xs450、xs350、xs250, other technical data as per regulation jc67-82. about the detailed products information, please come to our website: http://www.asbestos-joint.com