... mesh, etc.3.Variety: Single layer or multi-layer. Filter discs are provided in different shapes: round, rectangle, hoop and ellipse ... strongly corrosion resistance. 5)easy to clean. 5.Application: Filter discs and filter elements are mainly used for distillation, absorption, evaporation ... Packaging:in box or weaving bag/ or as customers request 7.Specification:Dia:53mm,70mm,90mm,120mm,160mm, mesh:50-400 ...