🚰This is a Universal Model for WS03X10025, 7337571, 7170288, STD302213
🚰Compatible with: Water Softener Filter Bypass Valve Seal
🚰Four per pack O-Ring
🚰It is best to replace O-RING every 3-4 months, depending on the use environment, temperature, water quality pH influence. Maintain pump and filter performance and don't wait for water leakage before doing measures
🚰O-Ring Is Made Of Rubber, Replace the Sealing Ring Regularly, the Filter Can Be Sealed For a Long Time and Work Better