{"product_id":"o-ring-2-357","title":"Pentair O-Ring, 2-357","description":"\u003cp\u003eThe Pentair 357255 is the genuine lid o-ring, size 2-357, for SuperFlo pool pumps. Pentair also lists it with OptiFlo and Sta-Rite SuperMax pump parts.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eThe o-ring that causes prime problems\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe lid o-ring seals the strainer pot against atmosphere while the pump pulls a vacuum on it. Once the ring hardens, flattens or picks up a nick, air gets in past it, and the pump either refuses to prime or runs with a pocket of air trapped under the clear lid. It looks like a suction line problem and it usually is not.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFitting and care\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eClean the groove and the lid seat before the new ring goes on, and use a silicone lubricant intended for pool equipment. Petroleum grease will swell and break down the rubber. Do not overtighten the lid to make a worn o-ring seal, since that distorts the ring and the lid without solving anything.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":48626992709844,"sku":"PAC-101-7255","price":14.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_5e6807ee-ac9a-4320-b96b-07225bc676f7.jpg?v=1788718834","url":"https:\/\/www.activepoolsupply.com\/products\/o-ring-2-357","provider":"Active Pool Supply","version":"1.0","type":"link"}