... imported material, and has the advantages of corrosivity resistance and high temperature resistance. It is fast to filter and its net ... material.5. Filter material: 304, 316L, PP, PTFE, Fluoro rubber, metal or nonmetal material, to meet different requirements.6 ... . Standard seal material: nitric rubber7. Optional material: PTFE, fluoro rubber, PVDF, silicon rubber, metal voluble graphite, ring nuts, ...