Hayward SX200Z3 O-ring Replacement for Select Filter O-ring replacement Fits hayward micro-clear vertical grid d.e. filter and sand filter series s240, s200 Also fits hayward super star-clear cartridge filter series c2000, c3000, c4000, c5000 Also compatible with Hayward Unions models SP1495, SP1498 Weighs 2.1-pound