{"product_id":"pentairboosterpumporingdrainplugla375penla375","title":"Pentair Booster Pump O-Ring Drain Plug | LA375","description":"\u003cdiv\u003e\n  \u003ch2\u003ePentair \/ Letro Booster Pump Drain Plug O-Ring (New Style) | LA375\u003c\/h2\u003e\n\n  \u003cp\u003e\n    The Pentair LA375 is a replacement \u003cstrong\u003edrain plug O-ring\u003c\/strong\u003e used on select Pentair\/Letro booster pumps.\n    It seals the pump’s drain plug to help prevent drips and suction-side air leaks after servicing or winterization.\n    Replacing a flattened, cracked, or swollen O-ring is a quick fix for seepage around the drain plug area.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eCompatibility\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePentair \/ Letro Universal Booster Pump:\u003c\/strong\u003e LA01N (commonly referenced on parts diagrams)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePentair Universal Booster Pump (parts lists):\u003c\/strong\u003e EC-LA01N assemblies where LA375 is specified\u003c\/li\u003e\n    \u003cli\u003e\n      \u003cem\u003eTip:\u003c\/em\u003e Match your existing drain plug O-ring style to your pump’s parts diagram (some older pumps used a different “old style” seal).\n    \u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eKey Features\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eStops drips at the drain plug\u003c\/strong\u003e by restoring the proper seal.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eHelps prevent air intrusion\u003c\/strong\u003e that can affect priming and consistent operation.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDirect replacement\u003c\/strong\u003e O-ring for booster pump drain plug service points.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSimple maintenance part\u003c\/strong\u003e—ideal to replace any time the drain plug is removed.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eSpecifications\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Pentair\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e LA375\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePart Type:\u003c\/strong\u003e Drain plug O-ring\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCommon Catalog Reference:\u003c\/strong\u003e 3285-60\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCommon O-Ring Reference:\u003c\/strong\u003e O-446 (as listed by many suppliers)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e Sold individually\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eWhen to Replace\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eWater drips or seepage around the drain plug\u003c\/li\u003e\n    \u003cli\u003eO-ring is flattened, cracked, brittle, nicked, or swollen\u003c\/li\u003e\n    \u003cli\u003eDrain plug won’t seal consistently even when snug\u003c\/li\u003e\n    \u003cli\u003eAfter freeze events or anytime the plug has been removed repeatedly\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eTurn off power to the pump at the breaker and relieve system pressure before servicing.\u003c\/li\u003e\n    \u003cli\u003eRemove the drain plug, then remove the old O-ring and clean the plug groove and sealing surface.\u003c\/li\u003e\n    \u003cli\u003eLightly lubricate the new O-ring with silicone pool lube (never petroleum-based) and seat it evenly without twisting.\u003c\/li\u003e\n    \u003cli\u003eReinstall the drain plug snugly—avoid over-tightening, which can damage threads or deform the seal.\u003c\/li\u003e\n    \u003cli\u003eRestart and inspect for leaks under normal operating pressure.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eRelated Products\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/pages\/search-results-page?q=LA375\"\u003eSearch Aqua Pool Supply for LA375\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/pages\/search-results-page?q=booster%20pump%20drain%20plug\"\u003eBooster pump drain plugs\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/pages\/search-results-page?q=silicone%20pool%20lube\"\u003eSilicone lubricant for O-rings and seals\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/pages\/search-results-page?q=Pentair%20booster%20pump%20parts\"\u003ePentair booster pump parts\u003c\/a\u003e\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eMaintenance Tips\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eInspect drain plug O-rings at the start and end of each season—small seals often fail before larger gaskets.\u003c\/li\u003e\n    \u003cli\u003eKeep a spare O-ring on hand if you winterize annually or service the pump frequently.\u003c\/li\u003e\n    \u003cli\u003eNever over-tighten plastic plugs; a clean sealing surface and a lubricated O-ring do the sealing work.\u003c\/li\u003e\n    \u003cli\u003eIn freeze-prone areas, fully drain the booster pump and remove plugs if recommended to prevent housing damage.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n","brand":"Pentair","offers":[{"title":"Default Title","offer_id":46797898678447,"sku":"LA375","price":5.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6415\/2239\/files\/pentair-booster-pump-o-ring-drain-plug-la375-pump-parts-5359003.jpg?v=1777068995","url":"https:\/\/freshized.com\/products\/pentairboosterpumporingdrainplugla375penla375","provider":"Freshized","version":"1.0","type":"link"}