{"product_id":"o-ring-9","title":"Pentair O-Ring for OptiFlo Pumps","description":"\u003cp\u003eThe Pentair 350103 is the o-ring for the OptiFlo pool pump, listed with the parts for the 3\/4 through 1-1\/2 HP models. It is the genuine Pentair part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhere it sits\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe source lists this as the pot to volute o-ring, the seal at the joint where the strainer pot meets the pump volute. It is on the suction side of the pump, which is why it matters more than its price suggests.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat a bad one does\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAnything upstream of the impeller that leaks does not drip, it draws air. A flattened, nicked or twisted o-ring at this joint lets air into the suction side, and the symptoms are a pump that will not hold prime, a strainer pot that never fills completely and air bubbling out of the returns.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFitting\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eClean the groove and the mating face before fitting, and use a thin film of silicone o-ring lubricant rated for pool use. Avoid petroleum based grease, which swells the rubber over time. Any time the pump is opened, fit a new o-ring rather than reusing the one that has been compressed in the groove for seasons.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":48634026787028,"sku":"PAC-101-0103","price":10.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_4194b1ed-6bef-4281-9c12-522ada2716eb.jpg?v=1788824965","url":"https:\/\/www.activepoolsupply.com\/products\/o-ring-9","provider":"Active Pool Supply","version":"1.0","type":"link"}