... needle Felt Filter Bags were made by PP,PE,Nylon,Nomex and Oil Absorbent.And they were used in liquid purified with filter bag ... vesse together. 7"x17" PP/PE needle Felt Filter Bags1).Nominal micron filter bags (#1,#2,#3 ... .(#1,#2,#3, ) 8).Pleated Media filter bags.(#1,#2,#3, )Micron Rated Liquid Filter BagsModel: A-B-C-D-E-F ...