{"product_id":"pentairpumpfilterlidoring85idpen152509zpen152509z","title":"Pentair Pump\/Filter Lid O-Ring, 8.5\" ID | 152509Z","description":"\u003cdiv\u003e\n\u003ch2\u003ePentair 152509Z – 8.5″ Square Ring \/ Lid O-Ring\u003c\/h2\u003e\n\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe Pentair 152509Z is a replacement sealing ring designed for 8.5″ diameter dome closures in select commercial and residential pool filter systems. It ensures a reliable, watertight seal to maintain pressure integrity and avoid leaks.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSpecifically fitted for 8.5″ dome-closure lids, square ring style.\u003c\/li\u003e\n\u003cli\u003eDurable material compatible with pool and spa environments.\u003c\/li\u003e\n\u003cli\u003eDirect replacement part—ideal when original ring is worn, flattened or leaking.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePart Number: 152509Z\u003c\/li\u003e\n\u003cli\u003eFitment: 8.5″ diameter dome closure lids\u003c\/li\u003e\n\u003cli\u003eRing Style: Square ring configuration\u003c\/li\u003e\n\u003cli\u003eTypical Applications: Commercial sand filters (e.g., TR100C\/TR140C series) and high-flow pool pumps\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications \u0026amp; Compatibility\u003c\/h3\u003e\n\u003cp\u003eThis ring is used where the sealing surface of a dome closure has become compromised, such as flattened, cracked or hardened O-ring surfaces. Commonly compatible with Pentair Challenger high-flow pumps, Triton TR100C and TR140C sand filter units. Before ordering, confirm your lid diameter is 8.5″ and the ring cross-section matches the OEM part.\u003c\/p\u003e\n\u003ch3\u003eInstallation Instructions\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eShut off the pump and relieve all pressure in the filter or pump housing.\u003c\/li\u003e\n\u003cli\u003eRemove the old sealing ring and clean the groove and lid sealing surface from any debris or residue.\u003c\/li\u003e\n\u003cli\u003eSeat the new 152509Z ring into the groove evenly, ensuring no twists or pinches.\u003c\/li\u003e\n\u003cli\u003eReinstall the closure lid, tighten per manufacturer specifications, restore circulation and check for leaks around the seal.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTroubleshooting\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLeakage after installation:\u003c\/strong\u003e Ensure the new ring is seated flat and the sealing surface is clean and undamaged.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRing slips or deforms:\u003c\/strong\u003e Confirm that the correct ring size (8.5″) was used and that the groove is not worn or damaged.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePressure spikes or abnormal operation:\u003c\/strong\u003e Check that the closure lid is properly tightened, the ring is not damaged, and the system has been bled of air.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eMaintenance Tip\u003c\/h3\u003e\n\u003cp\u003eInspect the sealing ring at each season’s opening. If the ring shows flattening, cracks or discoloration, replace it promptly. A proper seal helps maintain efficiency, prevents leaks, and prolongs the life of your filter system.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":46797815120047,"sku":"152509Z","price":11.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6415\/2239\/files\/pentair-pumpfilter-lid-o-ring-85-id-152509z-pump-parts-3456567.jpg?v=1777067683","url":"https:\/\/freshized.com\/products\/pentairpumpfilterlidoring85idpen152509zpen152509z","provider":"Freshized","version":"1.0","type":"link"}