Direct Replacement :Damaged retaining ring assemblies can lead to increased vibration of the pump body, which in turn generates noise. This vibration and noise not only affects the normal operation of the equipment, but also causes disturbance to the surrounding environment, and our This locking ring assembly can solve this problem perfectly! Locking Ring Assembly Compatible with :This locking ring assembly is designed to use with Pentair Clean & Clear, Warrior, EasyClean and Clean & Clear Predator pool and spa filter systems. Replacement Part Number :Perfect fit for Pentair #59052900, made to OEM standards for seamless compatibility. Model :CC 50, CC 75,CC 100,CC 150,CC 200;CCRP 100 /150/ 200, PXCRP100/150/200,EC60 EC90,SEP 100. Note : Please double check the part number and your appliances before purchasing to make sure this is the product you need.