The Hayward CCX1000Z5 O-Ring for Gauge Adapter & Air Relief is a crucial sealing component designed to enhance the performance and reliability of pool and spa filtration systems. Made from high-quality silicone or Viton, this O-ring is engineered to provide a secure and effective seal for gauge adapters and air relief valves, ensuring optimal operation and maintenance of the filtratio... https://www.usapoolshop.com/ccx1000z5-hayward-o-ring-for-gauge-adapter-air-relief