{"product_id":"o-ring-2-137","title":"Pentair FNS Plus Stand Pipe O-Ring","description":"\u003cp\u003eThe Pentair 59000600 is the stand pipe o-ring for the FNS Plus DE filter, a standard 2-137 size ring. It is also listed for the American Products Titan stainless steel and Titan CM DE filters.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat it seals\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe stand pipe runs up the center of a DE filter and carries filtered water out. The o-ring at that joint is the only thing keeping unfiltered water from taking a shortcut past the grids. When it hardens, flattens or tears, water bypasses the element and DE powder comes back to the pool through the returns.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFitting it\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eReplace it any time the filter is opened for grid cleaning or a tear down. Use a silicone lubricant intended for pool o-rings, never a petroleum grease, which swells and destroys the rubber. It is a small part against a filter that is not doing its job.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":48625843142868,"sku":"AMP-051-1165","price":18.13,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_2587efb0-22f7-451e-95b7-d1fca6c34368.png?v=1788701399","url":"https:\/\/www.activepoolsupply.com\/products\/o-ring-2-137","provider":"Active Pool Supply","version":"1.0","type":"link"}