MP Filtri Hydraulic Return Oil Filter Mf1002p25nbp01 Filter media: filter ny kinds of materials, such as glass fiber, wood pulp filterpaper , stainless steel sinter fiber web and stainless steel minal filtration rating: 0.01μ ~ 1000μ Operating pressure:21bar-210bar (Hydraulic Liquid Filtration) O-ring material: Vition, NBR The critical fact for the proper operation of the engine is to keep the lubricating oil clean, or to ensure no corrosive impurity inside the lubrication oil. MP Filtri Hydraulic Return Oil Filter 1. Pre-sale service : Provide you best products price you need Answer all your questions about the products patiently . 2. Medium-sale service : All filter ested before shippment Provide you newest goods transport conditions until you receive our products 3. After-sale service : Technical advisory for any time If the products have quality problem , and because of us , we will make the new products to you