Oil filter element is widely used in the hydraulic system, and lubricant system to filter the solid and colloidal particles, and can work effectively to control the media pollution then protect the system working safely and efficiently. Mainly be used in the hydraulic system of rolling mill, continuous cutting machine, or other lubricant machines. Also could be used to the particles separation and recovery in the field of oil refining, chemical products, and the filtration of dust particles in the oil field water injection or natural gas.