... ,Paronite. (1)Models:Asbestos Rubber Sheet:(low pressure) XB150,XB200,XB250,(medium pressure)XB300,XB350,(high pressure)XB400,XB450,XB510.(2)Material:Made of ... ,steam,etc.and used as sealing material in the joints of pipeline.(4)Technical parametersDensity:1.6-2.0g/cm³Working pressure ... Airtightness:with the temperature of 500-510°C and the pressure of 13-14MPa,Keep for 30 min without puncture (5 ...