The Hayward CX800F Filter Head O-Ring is a crucial component designed for sealing the filter head in various pool and spa filtration systems. With dimensions of 5.98" by 4.02" , this high-quality O-ring ensures a secure and leak-proof seal between the filter head and the filter housing, preventing water from bypassing the filtration process. Constructed from durable materials, the CX8... https://www.usapoolshop.com/cx800f-hayward-filter-head-o-ring