STA-RITE FILTER TANK O-RING 18" O-87 REPLACES PART U9-145 53002800
O-ring also fits the following filters below:
American (530028) Caribe, Quantum, Olympian, Sandpiper, Spin, Titan 18” Tank O-ring Marine (5260) Tank O-ring Muskin (037-3410) 18” Tank O-ring Premier (23-671) 18” Hercules Tank O-ring Premier (27-671) 18” Hercules Tank O-ring Sta Rite (U9-145) 18” Tank O-ring Swimrite (28-828-671) 18” Filter Tank O-ring Universal Filter Tank O-ring Wet (32-050-715) Tank O-ring.