{"product_id":"aladdin-star-clear-filter-head-o-ring-cx250f-o-305","title":"Aladdin Star-Clear Filter Head O-Ring | CX250F | O-305","description":"\u003cp data-start=\"1970\" data-end=\"2686\"\u003eThe Aladdin O-305 Hayward Star-Clear Filter Head O-Ring provides a reliable replacement for the Hayward CX250F seal used in Star-Clear cartridge filter assemblies. Constructed from chemical-resistant elastomer, it maintains flexibility under chlorine exposure, heat, and daily pressure variations to ensure a tight, uniform seal between the tank and filter head. The gasket’s OEM-style dimensions allow it to seat cleanly in the tank groove, helping preserve internal pressure and reduce performance loss caused by air intrusion or water leakage. Designed for lasting durability, the O-305 supports efficient filtration and dependable system operation for a wide range of pool environments.\u003c\/p\u003e\n\u003ch3 data-start=\"2688\" data-end=\"2706\"\u003e\u003cstrong data-start=\"2692\" data-end=\"2706\"\u003eHighlights\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul data-start=\"2707\" data-end=\"3359\"\u003e\n\u003cli data-start=\"2707\" data-end=\"2846\"\u003e\n\u003cp data-start=\"2709\" data-end=\"2846\"\u003e\u003cstrong data-start=\"2709\" data-end=\"2734\"\u003eHayward CX250F Match:\u003c\/strong\u003e Designed to replicate the original Star-Clear seal profile for accurate fitment and reliable leak prevention.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2847\" data-end=\"2981\"\u003e\n\u003cp data-start=\"2849\" data-end=\"2981\"\u003e\u003cstrong data-start=\"2849\" data-end=\"2880\"\u003eMaintains Optimal Pressure:\u003c\/strong\u003e Creates a consistent sealing surface that helps prevent air infiltration and system pressure loss.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2982\" data-end=\"3120\"\u003e\n\u003cp data-start=\"2984\" data-end=\"3120\"\u003e\u003cstrong data-start=\"2984\" data-end=\"3017\"\u003eResilient Elastomer Material:\u003c\/strong\u003e Chemical-resistant rubber withstands chlorine, heat, and repeated pressure cycles without hardening.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3121\" data-end=\"3245\"\u003e\n\u003cp data-start=\"3123\" data-end=\"3245\"\u003e\u003cstrong data-start=\"3123\" data-end=\"3147\"\u003eSimple Installation:\u003c\/strong\u003e Drops easily into the tank channel, making routine filter maintenance faster and more reliable.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3246\" data-end=\"3359\"\u003e\n\u003cp data-start=\"3248\" data-end=\"3359\"\u003e\u003cstrong data-start=\"3248\" data-end=\"3283\"\u003eImproves Filtration Efficiency:\u003c\/strong\u003e Helps stabilize system pressure and maintain strong water clarity and flow.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHayward Star-Clear Filters\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"5892\" data-end=\"5911\"\u003eAdditional Info\u003c\/h3\u003e\n\u003cp data-start=\"5912\" data-end=\"6247\"\u003eThe Aladdin O-305 Hayward Star-Clear Filter Head O-Ring replaces the CX250F seal used on Star-Clear cartridge filter systems. This FAQ helps SOSPool.com customers verify compatibility, understand installation steps, and know what to expect when ordering online. The O-305 maintains proper sealing and stable pressure during filtration.\u003c\/p\u003e\n\u003ch2 data-start=\"6249\" data-end=\"6290\"\u003eCompatibility Checks for Online Orders\u003c\/h2\u003e\n\u003cp data-start=\"6291\" data-end=\"6384\"\u003eOnline customers often want clear confirmation that this gasket fits their Star-Clear system.\u003c\/p\u003e\n\u003ch4 data-start=\"6386\" data-end=\"6458\"\u003eHow can I confirm the O-305 fits my Hayward filter before ordering?\u003c\/h4\u003e\n\u003cp data-start=\"6459\" data-end=\"6597\"\u003eCheck the filter label or manual for the CX250F part reference. If listed, the O-305 matches your system’s head-to-tank seal requirements.\u003c\/p\u003e\n\u003ch4 data-start=\"6599\" data-end=\"6665\"\u003eDoes the O-305 work across multiple Star-Clear filter models?\u003c\/h4\u003e\n\u003cp data-start=\"6666\" data-end=\"6783\"\u003eYes, Star-Clear filters use a standardized groove for the head O-ring. The O-305 fits securely across these versions.\u003c\/p\u003e\n\u003ch4 data-start=\"6785\" data-end=\"6853\"\u003eCan this O-ring help resolve air leaks or pressure instability?\u003c\/h4\u003e\n\u003cp data-start=\"6854\" data-end=\"6977\"\u003eYes, replacing a worn head gasket often restores proper sealing, helping maintain stable pressure and reliable circulation.\u003c\/p\u003e\n\u003ch2 data-start=\"6979\" data-end=\"7021\"\u003eInstallation and Setup After Delivery\u003c\/h2\u003e\n\u003cp data-start=\"7022\" data-end=\"7103\"\u003eThis section assists online customers with installation once their O-305 arrives.\u003c\/p\u003e\n\u003ch4 data-start=\"7105\" data-end=\"7150\"\u003eHow do I install the O-305 on my filter?\u003c\/h4\u003e\n\u003cp data-start=\"7151\" data-end=\"7309\"\u003eClean the groove, apply a thin silicone lubricant, and seat the O-ring evenly. Reinstall the filter head and tighten the clamp to achieve uniform compression.\u003c\/p\u003e\n\u003ch4 data-start=\"7311\" data-end=\"7368\"\u003eWhat should I check after installing the new gasket?\u003c\/h4\u003e\n\u003cp data-start=\"7369\" data-end=\"7520\"\u003eEnsure the filter maintains a steady PSI reading and that no moisture appears around the seam. Clear water and smooth pressure indicate proper sealing.\u003c\/p\u003e\n\u003ch4 data-start=\"7522\" data-end=\"7589\"\u003eHow long does the O-305 typically last under normal operation?\u003c\/h4\u003e\n\u003cp data-start=\"7590\" data-end=\"7734\"\u003eThe elastomer material withstands pool chemicals and pressure cycles. Routine inspection during seasonal maintenance helps maintain reliability.\u003c\/p\u003e\n\u003ch2 data-start=\"7736\" data-end=\"7779\"\u003eShipping, Delivery, and Online Support\u003c\/h2\u003e\n\u003cp data-start=\"7780\" data-end=\"7863\"\u003eSOSPool.com customers often want clarity on shipping timelines and part inspection.\u003c\/p\u003e\n\u003ch4 data-start=\"7865\" data-end=\"7924\"\u003eHow quickly does the O-305 ship after an online order?\u003c\/h4\u003e\n\u003cp data-start=\"7925\" data-end=\"8058\"\u003eOrders typically ship promptly, with estimated delivery windows shown at checkout. Tracking updates provide visibility until arrival.\u003c\/p\u003e\n\u003ch4 data-start=\"8060\" data-end=\"8111\"\u003eWhat should I inspect when the gasket arrives?\u003c\/h4\u003e\n\u003cp data-start=\"8112\" data-end=\"8248\"\u003eVerify that the O-ring is smooth, flexible, and undamaged. Compare its diameter with your old gasket or product photos for confirmation.\u003c\/p\u003e\n\u003ch4 data-start=\"8250\" data-end=\"8302\"\u003eShould I order additional parts with the O-305?\u003c\/h4\u003e\n\u003cp data-start=\"8303\" data-end=\"8441\"\u003eMany online customers add filter cartridges, pressure gauges, or clamp hardware to complete a full maintenance cycle in a single shipment.\u003c\/p\u003e","brand":"Aladdin","offers":[{"title":"Default Title","offer_id":52402653397292,"sku":"O-305","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0698\/1943\/3260\/files\/AladdinStar-ClearFilterHeadO-RingCX250FO-305SOSPool_2.jpg?v=1766078156","url":"https:\/\/www.sospool.com\/products\/aladdin-star-clear-filter-head-o-ring-cx250f-o-305","provider":"SOS Pool \u0026 Spa Supplies","version":"1.0","type":"link"}