Features: 1.Material：Made of high quality, long lasting chlorine resistant viton rubber. 2.CLX200K Pool Chlorinator Lid O-Ring for Hayward CL200/CL220 3.Dimension : Approximately 5.29" Inside Diameter x 5.52" Outside Diameter x 0.2" Thickness. 4.Compatible with: Hayward CL200 and CL220 5-1/2 inch Diameter Chlorinator feeder lid 5.Replace the sealing ring regularly, the filter can be sealed for a long time and work better to repair water leaks and purify water quality. 6.Spend less time worrying about your pool and more time enjoying it. Package include: 4 x CLX200K Pool Chlorinator Lid O-Rings .
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