2 Pack lens gasket replacement for Hayward pool lights SPX0580Z2, designed for SP0580, SP0580S, SP0583SL and SP0584SL series Underwater Lights. Outer diameter: 7 3/4 inches. Part number and quantity - PARTNO: SPX0580Z2 - Quantity: 2 x pool light gaskets Compatibility and suitability - Compatible with Hayward AstroLite SP0580 and SP0580S Series Underwater Lights - Includes models: SP0580S100, SP0580S15, SP0580S30, SP0580S50, SP0583SL100, SP0583SL150, SP0583SL30, SP0583SL50, W3SP0583SL100, SP0584SL100, SP0584SL50 - Please confirm whether your model is suitable before buying What this part does - Replaces worn or damaged lens gaskets to restore a reliable water seal for pool lights - Helps prevent water intrusion, corrosion, and potential electrical issues in pool lighting fixtures - Provides a fresh gasket fit tailored to Hayward SPX0580Z2 compatible lights 2-3 practical use scenarios - Routine maintenance: replace old gaskets during annual pool maintenance to maintain a secure seal and extend light fixture life - After bulb or cover replacement: install a new gasket to ensure a proper seal when reassembling the pool light assembly - Seasonal pool opening/closing: update gaskets to prevent leaks when opening or closing the pool for the season Notes - This is a replacement gasket set for Hayward pool lights; verify compatibility with your specific model before purchase - Includes two gaskets per order to support replacement of both sides if needed Performance and compatibility summary - Function: restore water seal for Hayward SP0580, SP0580S, SP0583SL and SP0584SL underwater lights - Size: outer diameter 7 3/4 inches for a proper fit in compatible housings - Material: gasket replacement designed for reliable sealing (exact material not specified by manufacturer) - Compatibility: broad coverage across SP0580 and SP0580S families plus SP0583SL and SP0584SL series and related variants listed above Please confirm model suitability before purchasing to ensure an exact fit for your Hayward pool light installation.