... valve sheet, ceramic pipe sleeve, ceramic loom plunger, ceramic seal ring, special shape ceramic, ceramic knife etc.Please fell free to ... . Materials 99.5% Al2O3, ZrO2. Applications fieldsAll kinds of filling machines, including Pharmaceutical, Beverages, Cosmetics, Chemical, Pesticides, Dairy..The volume from ... 0.005Parallelism0.01Planeness0.005Roughness 0.05Fit clearance0.005 ceramic seal ring