Keep your pool chlorinator in top condition with the 6pcs for CLX200K Pool Chlorinator Cover O-Ring. This black O-ring is designed for use with CL200 and CL220 chlorinators and helps to a secure and proper seal, preventing leaks and maintaining optimal chlorine levels in your pool. A must-have for pool maintenance. Seals cap to feeder body preventing chlorine gas leaks CLX200K Pool Chlorinator Lid O-Ring for CL200/CL220 Type:Pool & Accessories Feature:Water Treatment Colour:Black Material:Rubber Package Contents: 6 * O-type circle Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.