{"product_id":"locknut-perflex-ec40-50","title":"Hayward Locknut for Perflex EC50C90 DE Filters, ECX4249","description":"\u003cp\u003eThe Hayward ECX4249 is a locknut made for the Hayward Perflex EC50C90 Extended-Cycle DE filter.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat it does\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eA locknut is built to resist loosening from vibration, typically through a nylon insert or a slightly deformed thread that grips the mating screw more tightly than a plain nut would. On filter head hardware like the EC50C90, that resistance to loosening helps keep the assembly sealed and secure over repeated use.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFit and compatibility\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe ECX4249 is sized for the Hayward Perflex EC50C90 Extended-Cycle DE filter. If your filter is a different Perflex model, confirm the part number against your equipment before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eBefore you order\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe ECX4249 is sold individually, carries UPC 610377025287, and ships as a standard parcel item. If your filter head hardware kit calls for more than one locknut, order enough to finish the job at once.\u003c\/p\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":48694649815252,"sku":"HAY-051-8388","price":7.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_71f7b192-6460-49f1-ae3b-6c00737b632b.jpg?v=1789765801","url":"https:\/\/www.activepoolsupply.com\/products\/locknut-perflex-ec40-50","provider":"Active Pool Supply","version":"1.0","type":"link"}