{"product_id":"aladdin-hayward-northstar-easyclear-lid-o-ring-cx400g-o-504","title":"Aladdin Hayward NorthStar \u0026 EasyClear Lid O-Ring | CX400G | O-504","description":"\u003cp data-end=\"2602\" data-start=\"1913\"\u003eThe Aladdin O-504 Lid O-Ring provides a reliable replacement for the Hayward CX400G seal used on NorthStar pump lids and EasyClear cartridge filters. Made from chemical-resistant rubber, it maintains elasticity under chlorine exposure and pressure changes, helping prevent air intrusion and water leakage that can disrupt prime and system performance. Following the OEM-style CX400G contour, the O-504 seats smoothly in the lid groove, ensuring secure closure during servicing or seasonal maintenance. With its accurate fit and long-lasting sealing integrity, it supports consistent pressure and efficient hydraulic flow in compatible pump and filtration systems.\u003c\/p\u003e\n\u003ch3 data-end=\"2622\" data-start=\"2604\"\u003e\u003cstrong data-end=\"2622\" data-start=\"2608\"\u003eHighlights\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul data-end=\"3314\" data-start=\"2623\"\u003e\n\u003cli data-end=\"2776\" data-start=\"2623\"\u003e\n\u003cp data-end=\"2776\" data-start=\"2625\"\u003e\u003cstrong data-end=\"2651\" data-start=\"2625\"\u003eCX400G-Equivalent Fit:\u003c\/strong\u003e Designed to replicate Hayward’s original CX400G lid seal dimensions for dependable use on NorthStar and EasyClear systems.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2910\" data-start=\"2777\"\u003e\n\u003cp data-end=\"2910\" data-start=\"2779\"\u003e\u003cstrong data-end=\"2805\" data-start=\"2779\"\u003eProtects System Prime:\u003c\/strong\u003e Forms a watertight, airtight seal that helps prevent suction leaks and pressure loss during operation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"3057\" data-start=\"2911\"\u003e\n\u003cp data-end=\"3057\" data-start=\"2913\"\u003e\u003cstrong data-end=\"2946\" data-start=\"2913\"\u003eResilient Elastomer Material:\u003c\/strong\u003e Withstands chlorine, temperature shifts, and repeated compression cycles while maintaining sealing strength.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"3172\" data-start=\"3058\"\u003e\n\u003cp data-end=\"3172\" data-start=\"3060\"\u003e\u003cstrong data-end=\"3084\" data-start=\"3060\"\u003eSimple Installation:\u003c\/strong\u003e Seats naturally into the lid channel for quick, uniform placement during maintenance.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"3314\" data-start=\"3173\"\u003e\n\u003cp data-end=\"3314\" data-start=\"3175\"\u003e\u003cstrong data-end=\"3201\" data-start=\"3175\"\u003eImproves Overall Flow:\u003c\/strong\u003e Helps maintain steady pressure and filtration efficiency by eliminating leaks that affect hydraulic performance.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHayward NorthStar Pumps\u003c\/li\u003e\n\u003cli\u003eHayward EasyClear Filters\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-end=\"6199\" data-start=\"6180\"\u003eAdditional Info\u003c\/h3\u003e\n\u003cp data-end=\"6568\" data-start=\"6200\"\u003eThe Aladdin O-504 Lid O-Ring replaces the Hayward CX400G seal used for NorthStar pump lids and EasyClear cartridge filter tops. This FAQ assists SOSPool.com customers by explaining compatibility, installation steps, and what to expect when ordering online. These details help ensure the O-504 restores a secure, leak-free seal that supports optimal system performance.\u003c\/p\u003e\n\u003ch2 data-end=\"6611\" data-start=\"6570\"\u003eCompatibility Checks for Online Orders\u003c\/h2\u003e\n\u003cp data-end=\"6704\" data-start=\"6612\"\u003eOnline customers often want to confirm the correct Hayward lid seal before placing an order.\u003c\/p\u003e\n\u003ch4 data-end=\"6780\" data-start=\"6706\"\u003eHow can I verify the O-504 fits my Hayward equipment before ordering?\u003c\/h4\u003e\n\u003cp data-end=\"6967\" data-start=\"6781\"\u003eCheck your lid for the CX400G marking or confirm your system is a NorthStar pump or EasyClear filter. If so, the O-504 is the correct replacement. Comparing product photos can also help.\u003c\/p\u003e\n\u003ch4 data-end=\"7043\" data-start=\"6969\"\u003eDoes the O-504 work across multiple NorthStar and EasyClear versions?\u003c\/h4\u003e\n\u003cp data-end=\"7201\" data-start=\"7044\"\u003eYes, the lid-groove dimensions are standardized across these models. The O-504 fits securely and maintains reliable sealing pressure in all compatible units.\u003c\/p\u003e\n\u003ch4 data-end=\"7274\" data-start=\"7203\"\u003eWill replacing this O-ring help with air leaks or pressure issues?\u003c\/h4\u003e\n\u003cp data-end=\"7424\" data-start=\"7275\"\u003eYes, a worn lid seal commonly causes air intrusion or unstable pressure. The O-504 restores a tight barrier to support steady priming and filtration.\u003c\/p\u003e\n\u003ch2 data-end=\"7466\" data-start=\"7426\"\u003eInstallation and Setup After Delivery\u003c\/h2\u003e\n\u003cp data-end=\"7551\" data-start=\"7467\"\u003eThis section provides guidance for installing the O-504 once you receive your order.\u003c\/p\u003e\n\u003ch4 data-end=\"7610\" data-start=\"7553\"\u003eHow do I install the O-504 on my pump or filter lid?\u003c\/h4\u003e\n\u003cp data-end=\"7756\" data-start=\"7611\"\u003eClean the groove, seat the O-ring evenly, and apply a small amount of silicone-based lubricant. Reinstall the lid and tighten until fully sealed.\u003c\/p\u003e\n\u003ch4 data-end=\"7815\" data-start=\"7758\"\u003eWhat should I check after installing the new O-ring?\u003c\/h4\u003e\n\u003cp data-end=\"7956\" data-start=\"7816\"\u003eMonitor the pump and filter for stable pressure, quick priming, and absence of moisture around the lid. These signs confirm correct sealing.\u003c\/p\u003e\n\u003ch4 data-end=\"8019\" data-start=\"7958\"\u003eHow long does the O-504 typically last under normal use?\u003c\/h4\u003e\n\u003cp data-end=\"8178\" data-start=\"8020\"\u003eThe elastomer material resists chlorine, compression set, and heat, allowing long service life. Periodic inspection during routine maintenance is recommended.\u003c\/p\u003e\n\u003ch2 data-end=\"8223\" data-start=\"8180\"\u003eShipping, Delivery, and Online Support\u003c\/h2\u003e\n\u003cp data-end=\"8317\" data-start=\"8224\"\u003eSOSPool.com customers often want to understand delivery timelines and proper part inspection.\u003c\/p\u003e\n\u003ch4 data-end=\"8371\" data-start=\"8319\"\u003eHow quickly does the O-504 ship after ordering?\u003c\/h4\u003e\n\u003cp data-end=\"8524\" data-start=\"8372\"\u003eMost orders ship promptly, and checkout provides accurate delivery estimates. Tracking updates let you monitor the shipment as it moves through transit.\u003c\/p\u003e\n\u003ch4 data-end=\"8577\" data-start=\"8526\"\u003eWhat should I inspect when the O-ring arrives?\u003c\/h4\u003e\n\u003cp data-end=\"8721\" data-start=\"8578\"\u003eEnsure the O-ring is smooth, flexible, undamaged, and properly shaped. Comparing it to product images helps confirm readiness for installation.\u003c\/p\u003e\n\u003ch4 data-end=\"8779\" data-start=\"8723\"\u003eShould I order any additional parts with the O-504?\u003c\/h4\u003e\n\u003cp data-end=\"8911\" data-start=\"8780\"\u003eMany online customers add clamp O-rings, filter cartridges, or union gaskets to complete their maintenance project in one shipment.\u003c\/p\u003e","brand":"Aladdin","offers":[{"title":"Default Title","offer_id":52400655991084,"sku":"O-504","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0698\/1943\/3260\/files\/AladdinHaywardNorthStar_EasyClearLidO-RingCX400GO-504SOSPool_1.jpg?v=1766078200","url":"https:\/\/www.sospool.com\/products\/aladdin-hayward-northstar-easyclear-lid-o-ring-cx400g-o-504","provider":"SOS Pool \u0026 Spa Supplies","version":"1.0","type":"link"}