{"product_id":"o-ring-590-lid","title":"Pentair 590 Lid O-Ring","description":"\u003cp\u003eThe Pentair 352602 is the lid o-ring for the 590, carried in the PacFab HydroPump 590 and 700 Series parts group. It is the genuine Pentair part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy the lid o-ring matters\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe strainer pot lid sits on the suction side of the pump, so it is under vacuum rather than pressure while the pump runs. That means a bad seal here does not drip on the pad, it quietly pulls air into the system. The symptoms show up somewhere else: a pump that will not hold prime, air building in the top of the strainer basket, a wobbling pressure gauge or bubbles at the returns.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFitting it\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eWipe the groove and the lid face clean before the new o-ring goes in, then give it a light coat of silicone lubricant. A dry o-ring can roll or pinch as the lid comes down, which puts you straight back to the original problem, and it also tends to weld the lid on so the next basket clean becomes a fight.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":48634969587924,"sku":"PAC-101-3060","price":14.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_c3bfee70-45c9-43a8-bf51-fc8bbc9dc6ea.png?v=1788839182","url":"https:\/\/www.activepoolsupply.com\/products\/o-ring-590-lid","provider":"Active Pool Supply","version":"1.0","type":"link"}