{"product_id":"hayward-spx4000s-strainer-cover-o-ring","title":"Hayward SPX4000S Strainer Cover O-Ring","description":"\u003cp\u003e\u003cstrong\u003eWhat This Part Is Used For\u003c\/strong\u003e\u003cbr\u003e The Hayward SPX4000S is a strainer cover O-ring used on compatible Hayward pump strainer lids. It seals the lid to the strainer housing so the pump can pull suction and maintain prime. This O-ring installs at the pump basket lid sealing surface.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eWhy This Part Matters\u003c\/strong\u003e\u003cbr\u003e A dry, flattened, or cracked lid O-ring is a common cause of air leaks that show up as bubbles under the lid and weak circulation. Suction side air reduces filtration performance and can create flow issues across the equipment pad. Replacing the correct O-ring restores a tight seal and helps the pump run steady without constant reprime. It is one of the quickest fixes for a pump that suddenly starts acting like it has a clog.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eKey Features and Specifications\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eManufacturer part number: SPX4000S\u003c\/li\u003e \u003cli\u003eStrainer cover O-ring for compatible Hayward pump lids\u003c\/li\u003e \u003cli\u003eSeals lid to strainer housing to prevent suction air leaks\u003c\/li\u003e \u003cli\u003eHelps maintain prime and stable circulation flow\u003c\/li\u003e \u003cli\u003eCommon service replacement during pump basket maintenance\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eInstallation and Fitment Guidance\u003c\/strong\u003e\u003cbr\u003e Shut off power and open the pump lid only when the system is off. Clean the O-ring groove and seat the O-ring evenly so it does not pinch when the lid is secured. Confirm by manufacturer part number before ordering.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eAbout the Hayward Brand\u003c\/strong\u003e\u003cbr\u003e Hayward manufactures a full residential pool equipment ecosystem including pumps, filters, heaters, automation, cleaners, chlorination systems, and service parts. Their pumps integrate with Hayward filtration and heating equipment, so suction sealing plays a big role in overall pad performance. Routine service parts like lid O-rings help prevent avoidable flow issues and downtime. Hayward replacement parts are widely supported across the pool industry.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eCommon Service Context\u003c\/strong\u003e\u003cbr\u003e Techs typically replace lid O-rings when a pump struggles to prime, shows air bubbles in the basket, or leaks water at the lid seam. It is often identified during spring startup or after the lid has been removed repeatedly for basket cleanings.\u003c\/p\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":52050179391762,"sku":"SPX4000S","price":35.91,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/2279\/1186\/files\/HPPSPX4000S_0.jpg?v=1771892456","url":"https:\/\/www.aquaterrabackyard.com\/products\/hayward-spx4000s-strainer-cover-o-ring","provider":"Aqua Terra Backyard","version":"1.0","type":"link"}