grooved pp sediment filter cartridge pp melt blown filter cartridge are made of 100% polypropylene without any glue ... the middle,and fine fiber in the surface.The cartridge has high capacity of dirt,low pressure drop, ... suspended substance,particals and rust in the water effectively.Filter media:PolypropyleneFilter rate:1um,5um,10um,20um,30um, ... pressure:2.0Bar 10" grooved pp melt blown filter cartridge