Zodiac R0357800 Tank O-Ring Replacement for Select Zodiac D.E. and Cartridge Pool and Spa Filters Tank O-ring replacement Fits Zodiac CV and CL series cartridge pool and spa filter models CV340, CV460, CV580, CL340, CL460, CL580 Also fits Zodiac Jandy DEV and DEL series D.E. pool and spa filter models DEV48, DEV60, DEL48, DEL60