As hydraulic systems are becoming more sophisticated, the hydraulic filter has become a critical component. With the need for closer tolerances, faster cycle times, higher pressures and extended service intervals, more demand is being placed on the hydraulic filters. Proper filtration starts with selecting the right filter based on the original equipment manufacture’s recommendations, which include: The type of fluid used and the system operating pressure. The amount of fluid flow required for system operation, and the amount of contaminant the filter needs to be able to trap and hold in order to meet service interval expectation.