Glass/cellulose and resin impregnated cellulose . Filtration efficiencies are determined in accordance with ISO-4572 multipass tes procedure . applications in ammine , chemicals , completion fluids , glycols , fuel oils , hydraulic oils , insulating oils , lube & seal oils , solvents , salt water , brines , waste water , water flood and other products . Available in many I.D. , O.D. and length .