Kaeser Oil Filter 6.1901.0 Products description 1.Filter fineness:10-15 micron . 2.Filtration efficiency:98.8%. 3.Service life is approximately:2000h. 4.Filter element of oil filter is made by the thin fiberglass,which imported from HV&Ahistrom company. Kaeser air filter 6.4143.0 6.2003.0 6.1996.0 ...