{"product_id":"aladdin-o-504-hayward-northstar-easyclear-lid-o-ring-cx400g","title":"Aladdin O-504 Hayward NorthStar \u0026 EasyClear Lid O-Ring | CX400G","description":"\u003cp data-end=\"937\" data-start=\"240\"\u003eThe Aladdin O-504 Lid O-Ring is a precision-molded seal crafted to match the original Hayward CX400G dimensions used on NorthStar pumps and EasyClear cartridge filter lids. Its chemical-resistant elastomer maintains flexibility under pressure, heat, and daily filtration cycles, forming a uniform barrier that helps prevent suction-side air leaks and water seepage. By following the original Hayward sealing profile, the O-504 seats securely into the lid groove for reliable closure during routine maintenance. Designed for durable performance, it helps maintain system pressure, protect prime, and support stable hydraulic flow across compatible pump and filter systems.\u003c\/p\u003e\n\u003ch3 data-end=\"957\" data-start=\"939\"\u003e\u003cstrong data-end=\"957\" data-start=\"943\"\u003eHighlights\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul data-end=\"1674\" data-start=\"958\"\u003e\n\u003cli data-end=\"1102\" data-start=\"958\"\u003e\n\u003cp data-end=\"1102\" data-start=\"960\"\u003e\u003cstrong data-end=\"985\" data-start=\"960\"\u003eMatches CX400G Specs:\u003c\/strong\u003e Molded to align with the original Hayward CX400G lid seal used on NorthStar pumps and EasyClear cartridge filters.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1256\" data-start=\"1103\"\u003e\n\u003cp data-end=\"1256\" data-start=\"1105\"\u003e\u003cstrong data-end=\"1138\" data-start=\"1105\"\u003ePrevents Air and Water Leaks:\u003c\/strong\u003e Creates a consistent sealing surface that protects prime, maintains pressure, and supports smooth system operation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1407\" data-start=\"1257\"\u003e\n\u003cp data-end=\"1407\" data-start=\"1259\"\u003e\u003cstrong data-end=\"1291\" data-start=\"1259\"\u003eDurable Rubber Construction:\u003c\/strong\u003e Chemical-resistant elastomer withstands chlorine, heat, and repeated compression without losing sealing strength.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1545\" data-start=\"1408\"\u003e\n\u003cp data-end=\"1545\" data-start=\"1410\"\u003e\u003cstrong data-end=\"1434\" data-start=\"1410\"\u003eEasy Groove Seating:\u003c\/strong\u003e Fits cleanly into the lid channel, allowing quick replacement and dependable sealing during regular service.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1674\" data-start=\"1546\"\u003e\n\u003cp data-end=\"1674\" data-start=\"1548\"\u003e\u003cstrong data-end=\"1583\" data-start=\"1548\"\u003eSupports Filtration Efficiency:\u003c\/strong\u003e Helps maintain stable suction and pressure, promoting optimal pump and filter 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=\"3299\" data-start=\"3280\"\u003eAdditional Info\u003c\/h3\u003e\n\u003cp data-end=\"3669\" data-start=\"3300\"\u003eThe Aladdin O-504 Lid O-Ring is engineered to replace the Hayward CX400G seal used on NorthStar pump lids and EasyClear cartridge filters. This FAQ helps Wholesale Pool Mart customers compare local pricing, check nearby stock, and prepare for service work involving lid-seal failures. These details ensure the O-504 supports leak-free, consistent hydraulic performance.\u003c\/p\u003e\n\u003ch2 data-end=\"3707\" data-start=\"3671\"\u003eCompatibility and Fitment Details\u003c\/h2\u003e\n\u003cp data-end=\"3807\" data-start=\"3708\"\u003eService professionals often verify exact seal numbers before performing filter or pump maintenance.\u003c\/p\u003e\n\u003ch4 data-end=\"3875\" data-start=\"3809\"\u003eIs the O-504 the correct replacement for the CX400G lid seal?\u003c\/h4\u003e\n\u003cp data-end=\"4047\" data-start=\"3876\"\u003eYes, the O-504 is molded to match the OEM CX400G dimensions used on NorthStar pumps and EasyClear filters. If your equipment references CX400G, this is the correct O-ring.\u003c\/p\u003e\n\u003ch4 data-end=\"4137\" data-start=\"4049\"\u003eWill the O-504 fit consistently across different versions of these Hayward systems?\u003c\/h4\u003e\n\u003cp data-end=\"4279\" data-start=\"4138\"\u003eYes, Hayward standardized the lid-groove dimensions for these models, so the O-504 maintains uniform compression across all compatible units.\u003c\/p\u003e\n\u003ch4 data-end=\"4333\" data-start=\"4281\"\u003eCan a new O-504 improve filtration consistency?\u003c\/h4\u003e\n\u003cp data-end=\"4494\" data-start=\"4334\"\u003eYes, a proper lid seal prevents air intrusion and pressure instability. Installing the O-504 helps restore steady hydraulic performance and optimal circulation.\u003c\/p\u003e\n\u003ch2 data-end=\"4551\" data-start=\"4496\"\u003eInstallation, Maintenance, and Service Preparation\u003c\/h2\u003e\n\u003cp data-end=\"4651\" data-start=\"4552\"\u003eWholesale Pool Mart customers often gather all required parts ahead of multi-system service visits.\u003c\/p\u003e\n\u003ch4 data-end=\"4707\" data-start=\"4653\"\u003eHow should the O-504 be installed during service?\u003c\/h4\u003e\n\u003cp data-end=\"4878\" data-start=\"4708\"\u003eClean the lid groove thoroughly, position the O-ring evenly, and apply a thin silicone lubricant. Tighten the lid until the seal is fully compressed for best performance.\u003c\/p\u003e\n\u003ch4 data-end=\"4932\" data-start=\"4880\"\u003eWhat issues arise when the CX400G seal is worn?\u003c\/h4\u003e\n\u003cp data-end=\"5105\" data-start=\"4933\"\u003eSymptoms include air bubbles in the pump basket, filter pressure fluctuations, and water seepage around the lid. Replacing the seal typically resolves these issues quickly.\u003c\/p\u003e\n\u003ch4 data-end=\"5173\" data-start=\"5107\"\u003eHow do technicians confirm the seal is functioning correctly?\u003c\/h4\u003e\n\u003cp data-end=\"5329\" data-start=\"5174\"\u003eStable pressure readings and a pump that primes without hesitation indicate a proper seal. Moisture-free operation around the lid is another positive sign.\u003c\/p\u003e\n\u003ch2 data-end=\"5382\" data-start=\"5331\"\u003eLocal Pricing, Stock, and Service Coordination\u003c\/h2\u003e\n\u003cp data-end=\"5502\" data-start=\"5383\"\u003eService professionals and DIY customers often check multiple Wholesale Pool Mart locations before starting maintenance.\u003c\/p\u003e\n\u003ch4 data-end=\"5580\" data-start=\"5504\"\u003eIs the O-504 usually in stock across nearby Wholesale Pool Mart stores?\u003c\/h4\u003e\n\u003cp data-end=\"5733\" data-start=\"5581\"\u003eYes, the O-504 is commonly stocked due to frequent lid-seal replacement needs. Checking local pricing helps plan for bulk or multi-system service calls.\u003c\/p\u003e\n\u003ch4 data-end=\"5795\" data-start=\"5735\"\u003eWhat should I have ready when calling for availability?\u003c\/h4\u003e\n\u003cp data-end=\"5917\" data-start=\"5796\"\u003eProvide your equipment model or the CX400G reference number. A photo of your lid can help staff confirm the correct part.\u003c\/p\u003e\n\u003ch4 data-end=\"5986\" data-start=\"5919\"\u003eDo technicians often purchase other seals alongside the O-504?\u003c\/h4\u003e\n\u003cp data-end=\"6107\" data-start=\"5987\"\u003eYes, many also pick up clamp O-rings, union gaskets, or filter cartridges to complete system refurbishment in one visit.\u003c\/p\u003e","brand":"Aladdin","offers":[{"title":"Default Title","offer_id":54546966315299,"sku":"O-504","price":12.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0914\/0987\/5235\/files\/AladdinO-504HaywardNorthStar_EasyClearLidO-RingCX400GWholesalePoolMart_1.jpg?v=1766078207","url":"https:\/\/wholesalepoolmart.com\/products\/aladdin-o-504-hayward-northstar-easyclear-lid-o-ring-cx400g","provider":"Wholesale Pool Mart","version":"1.0","type":"link"}