{"product_id":"o-537-aladdin-eq-series-pump-lid-o-ring-350166","title":"O-537 | Aladdin EQ Series Pump Lid O-Ring | 350166","description":"\u003cp data-start=\"173\" data-end=\"760\"\u003eThe Aladdin O-537 EQ Series Pump Lid O-Ring (OEM 350166) is a direct replacement gasket designed for use with the Pentair EQ-Series commercial pool pumps’ hair and lint strainer lids. Crafted from durable, chemically-resistant elastomer, this O-ring ensures a tight, leak-proof seal between the lid and pump housing — preventing water loss and maintaining proper internal pressure. It’s engineered to meet original equipment specifications and withstand the harsh conditions of chlorinated pool or spa water, making it an essential maintenance part when servicing or resealing your pump.\u003c\/p\u003e\n\u003ch3 data-start=\"762\" data-end=\"776\"\u003eHighlights\u003c\/h3\u003e\n\u003cul data-start=\"777\" data-end=\"1737\"\u003e\n\u003cli data-start=\"777\" data-end=\"966\"\u003e\n\u003cp data-start=\"779\" data-end=\"966\"\u003e\u003cstrong data-start=\"779\" data-end=\"806\"\u003eOEM-Spec Compatibility:\u003c\/strong\u003e Perfect fit for Pentair EQ-Series pump lids (part number 350166), ensuring seamless installation without modifications.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"967\" data-end=\"1163\"\u003e\n\u003cp data-start=\"969\" data-end=\"1163\"\u003e\u003cstrong data-start=\"969\" data-end=\"998\"\u003eReliable Leak Prevention:\u003c\/strong\u003e Seals the strainer lid tightly to the pump housing to prevent water leaks, pressure loss, or air intrusion during operation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1164\" data-end=\"1365\"\u003e\n\u003cp data-start=\"1166\" data-end=\"1365\"\u003e\u003cstrong data-start=\"1166\" data-end=\"1202\"\u003eChemical-Resistant Construction:\u003c\/strong\u003e Made from pool-grade rubber that resists degradation from chlorine, salt, and temperature variations — ensuring longevity.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1366\" data-end=\"1576\"\u003e\n\u003cp data-start=\"1368\" data-end=\"1576\"\u003e\u003cstrong data-start=\"1368\" data-end=\"1398\"\u003eEssential for Maintenance:\u003c\/strong\u003e Recommended whenever the lid is removed for cleaning or inspection, or during routine pump servicing to restore full sealing performance.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1577\" data-end=\"1737\"\u003e\n\u003cp data-start=\"1579\" data-end=\"1737\"\u003e\u003cstrong data-start=\"1579\" data-end=\"1608\"\u003eSupports Pump Efficiency:\u003c\/strong\u003e Proper sealing helps maintain consistent water flow and pressure, contributing to efficient filtration and extended pump life.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePentair EQ Series Pumps\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"231\" data-end=\"250\"\u003eAdditional Info\u003c\/h3\u003e\n\u003cp data-start=\"251\" data-end=\"690\"\u003eThe Aladdin O-537 EQ Series Pump Lid O-Ring is built to match Pentair’s OEM 350166 seal for EQ-Series commercial pump lids. This section helps Discount Pool Mart customers confirm compatibility, understand common leak symptoms, and prepare for proper resealing when servicing large EQ pump systems. These FAQs are tailored for walk-in customers looking for dependable sealing performance and guidance before picking up the O-ring in store.\u003c\/p\u003e\n\u003ch2 data-start=\"692\" data-end=\"720\"\u003eCompatibility and Fitment\u003c\/h2\u003e\n\u003cp data-start=\"721\" data-end=\"829\"\u003eWalk-in customers often bring old seals or photos of their commercial EQ pumps to verify the correct O-ring.\u003c\/p\u003e\n\u003ch4 data-start=\"831\" data-end=\"902\"\u003eHow do I confirm that the O-537 matches my Pentair EQ-Series pump?\u003c\/h4\u003e\n\u003cp data-start=\"903\" data-end=\"1078\"\u003eIf your pump uses the OEM 350166 lid O-ring, the O-537 is the correct direct-fit replacement. Many customers bring the old gasket to Discount Pool Mart for quick confirmation.\u003c\/p\u003e\n\u003ch4 data-start=\"1080\" data-end=\"1145\"\u003eDoes this O-ring work on all EQ-Series commercial pump lids?\u003c\/h4\u003e\n\u003cp data-start=\"1146\" data-end=\"1260\"\u003eYes, the O-537 is molded to meet EQ-Series lid specifications, ensuring proper compression and watertight sealing.\u003c\/p\u003e\n\u003ch4 data-start=\"1262\" data-end=\"1333\"\u003eCan this O-ring help fix low pressure or air intrusion in my pump?\u003c\/h4\u003e\n\u003cp data-start=\"1334\" data-end=\"1479\"\u003eYes, a worn lid seal is a common cause of performance loss. Installing the O-537 typically restores stable pressure and eliminates suction leaks.\u003c\/p\u003e\n\u003ch2 data-start=\"1481\" data-end=\"1518\"\u003eInstallation and Troubleshooting\u003c\/h2\u003e\n\u003cp data-start=\"1519\" data-end=\"1601\"\u003eThese answers help customers prepare for proper sealing and avoid common mistakes.\u003c\/p\u003e\n\u003ch4 data-start=\"1603\" data-end=\"1661\"\u003eWhat should I check before installing the new O-ring?\u003c\/h4\u003e\n\u003cp data-start=\"1662\" data-end=\"1805\"\u003eClean the lid groove, remove debris or scale, and ensure the sealing surface is smooth. This helps the O-537 seat evenly and prevents pinching.\u003c\/p\u003e\n\u003ch4 data-start=\"1807\" data-end=\"1858\"\u003eWhy is my lid still leaking after replacement?\u003c\/h4\u003e\n\u003cp data-start=\"1859\" data-end=\"2012\"\u003eUneven tightening or an improperly seated O-ring can cause leaks. Resetting the seal and confirming consistent clamp pressure usually resolves the issue.\u003c\/p\u003e\n\u003ch4 data-start=\"2014\" data-end=\"2074\"\u003eHow can I verify the new seal is functioning correctly?\u003c\/h4\u003e\n\u003cp data-start=\"2075\" data-end=\"2192\"\u003eLook for dry operation around the lid area, stable pump pressure, and normal priming without air entering the system.\u003c\/p\u003e\n\u003ch2 data-start=\"2194\" data-end=\"2233\"\u003eIn-Store Pickup and Local Guidance\u003c\/h2\u003e\n\u003cp data-start=\"2234\" data-end=\"2292\"\u003eThese FAQs prepare walk-in customers for a smoother visit.\u003c\/p\u003e\n\u003ch4 data-start=\"2294\" data-end=\"2341\"\u003eShould I bring my old O-ring to the store?\u003c\/h4\u003e\n\u003cp data-start=\"2342\" data-end=\"2442\"\u003eYes, bringing the old seal or a photo of the lid helps staff match the O-537 quickly and accurately.\u003c\/p\u003e\n\u003ch4 data-start=\"2444\" data-end=\"2504\"\u003eIs this O-ring typically available for same-day pickup?\u003c\/h4\u003e\n\u003cp data-start=\"2505\" data-end=\"2613\"\u003eDiscount Pool Mart commonly stocks EQ-Series O-rings, but calling ahead ensures availability for your visit.\u003c\/p\u003e\n\u003ch4 data-start=\"2615\" data-end=\"2689\"\u003eDo customers often purchase additional items when servicing EQ pumps?\u003c\/h4\u003e\n\u003cp data-start=\"2690\" data-end=\"2801\"\u003eMany pick up lubricants, replacement drain plugs, or lid hardware when resealing large commercial pump systems.\u003c\/p\u003e","brand":"Aladdin","offers":[{"title":"Default Title","offer_id":51028210843936,"sku":"O-537","price":12.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0922\/3326\/9536\/files\/O-537AladdinEQSeriesPumpLidO-Ring350166DiscountPoolMart_1.jpg?v=1777146274","url":"https:\/\/discountpoolmart.com\/products\/o-537-aladdin-eq-series-pump-lid-o-ring-350166","provider":"Discount Pool Mart","version":"1.0","type":"link"}