Donaldson's FLK system is its newest medium-pressure hydraulic filtration technology for OEM and aftermarket customers involved in a host of applications, including heavy-duty construction and mining equipment operations. FLK is manufactured using two of Donaldson’s filtration technologies–Synteq XP and RadialSeal. Synteq XP is a resin-free thermally bonded media that provides lower operating pressure drop, higher efficiency, superior cold-start filtration, extended filter life (up to 2 to 3 times that of traditional filter media), and versatile and smaller filter packaging configurations. Donaldson RadialSeal technology creates a clean, leak-tight seal—with no metal-to-metal contact—that protects the system from harmful ingressed contaminants, preventing cross contamination of oil. RadialSeal technology also provides a robust connection with superior vibration resistance, making it particularly suitable for heavy-duty applications. The FLK’s industrial, raised hand-grips make it easy to remove the housing from the head without the need for special service tools. The versatile filter head accommodates multiple filter lengths, while the housing locks the filter cartridge in place, providing a clean filter service process during removal and simplifying positioning during assembly. The cartridge’s closed lower endcap also prevents cross contamination during the filter service process.