... a flexible, resilient,homogeneous and compact packing .Used in pumps and valves for various kindsof chemicals (acid, alkali, oil, steam, ... valves for coolants, medium index acidsand alkalis, petrochemical and foodstuff industries.Pressure: 2Mpa in centrifugal pumps, 10Mpa in piston pumps, 20Mpa in valves ... speed: 4M/S in centrifugal pumps, 2M/S in piston pumps, 2M/Sin valves.PH range :0~14Spec:3.0mm ...