TORK Brand Hayward CX800F Star-Clear II Filter O-ring Replacement Kit MODELS C-800, C-1100, C-1500 Hayward CX800F Filter Cover O-ring Replacement Kit Fits Models Star-Clear II Kit include:CX250Z7 oring, S200Z14 Drain Plug O'ring, air relief oring ecx1322a and CX800F Cover Tank O'ring, Quality Replacement Parts by TORK Distributors Fits CARTRIDGE FILTER MODELS C-800, C-1100, C-1500