Replacement pump lid with Oring seal for sand filter systems. Designed to stop water bypass at the pump cover and maintain consistent pump operation. Key benefits Leakproof sealing: Integrated Oring creates an airtight seal around the lid to prevent water from leaking past the pump cover. This helps maintain proper pressure and consistent flow through the filter. Reliable performance: A secure seal reduces the risk of air intake and water loss that can impair pump priming and overall efficiency. Direct replacement: Made to worn or damaged lids on compatible sand filter and pump models, restoring proper operation without modifying existing equipment. Features and attributes Function: Replacement lid for sand filter pumps, providing a tight seal and straightforward fit. Compatibility: Fits the following models and systems as replacement parts: 2640GPH 13' Sand Filter, 12inch Sand Filter Pump For 2640GPH 13' Sand Filter, 75110V 12' Sand System Filter Tank 10,000 Gal Above Ground, 3/4HP 2400GPH Pond DIY Self Primming Above Ground Swimming Pool Pump, Compatible with 75110 Pool Sand Filter 13' Pump 3/4HP, 3,100GPH Swimming Pool 16' Sand Filter 3/4 HP Pool Pump, 75131V1 16' Sand Filter Swimming 3/4 HP Pump Size fit: Suitable for the listed 12', 13', and 16' sand filter pump configurations where specified. Construction: Built for pool and pond filtration environments; designed to withstand routine use as a replacement component. Installation and use Simple swap: Remove the old lid and Oring, seat the replacement Oring in the lid groove, and secure the lid to the filter housing for a proper seal. Maintenance tip: Inspect the Oring periodically for wear and clean the sealing surfaces to preserve leak performance. Use scenarios a cracked or leaking pump lid on an above ground sand filter during spring pool opening to restore proper priming and flow. Upgrade the lid and Oring on a DIY pond pump to stop water seepage and reduce air intrusion that interferes with pump cycling. Keep a replacement lid on hand for routine maintenance of a 3/4HP pool pump used with 13' or 16' sand filter systems. This replacement lid is a practical spare part for maintaining sand filter pump performance and preventing water leakage around the pump cover.