{"product_id":"strainer-cover-o-ring-buna-n-70-2-357","title":"Pentair Strainer Cover O-Ring, Buna-N 70, #2-357, 357255Z","description":"\u003cp\u003eThe Pentair 357255Z is the strainer cover o-ring, supplied in Buna-N at 70 durometer in the standard #2-357 size. It is the seal between the pump lid and the strainer pot.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat it does\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eEverything on the suction side of a pump runs under vacuum, so any gap there pulls air rather than leaking water. The strainer cover o-ring is the largest and most exposed of those seals, and it is the one that gets compressed and released every time somebody empties the basket.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen to change it\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIf the pump is slow to prime, holds air in the basket while it runs, or the lid has to be forced down to hold a seal, replace the o-ring before looking anywhere else. Keep it lubricated with a silicone based product intended for pool o-rings. Petroleum grease swells and degrades the rubber and will shorten the life of the new one.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":48634153173204,"sku":"PAC-101-1042","price":9.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_00e6be58-63ce-4670-97fa-fe89feab00e3.png?v=1788825836","url":"https:\/\/www.activepoolsupply.com\/products\/strainer-cover-o-ring-buna-n-70-2-357","provider":"Active Pool Supply","version":"1.0","type":"link"}