Jaruika (2-Pack CX900F Filter Head O-Ring Replacement for Hay-Ward Star-Clear Plus C751 C900 C1200, Pen-tair U9-228A, 39006000 Durable Replacement Pool & Spa Cartridge Filter Seal Gasket

["UNIVERSAL COMPATIBILITY & PRECISION FIT: Engineered as a seamless replacement for Hay-ward Star-Clear Plus C751, C900, and C1200. Fully compatible with Pen-tair/Sta-Rite (U9-228A) and American Products (39006000). Provides a snug, airtight seal that restores performance.","HEAVY-DUTY MATERIAL FOR LONGEVITY: Constructed from premium-grade, high-density rubber. \"Salt-Water Ready\" design resists chemical degradation, UV exposure, and extreme temperature fluctuations without leaving black residue.","ELIMINATE LEAKS & PRESSURE LOSS: Ensures a zero-leak connection between filter head and body. Prevents air infiltration and water dripping at the canister seam, protecting your pump and motor from strain.","CONVENIENT 2-PACK VALUE (SPARE TIRE STRATEGY): Includes an immediate replacement plus a spare for future maintenance. Avoid downtime during peak swimming season by having a backup \"on the shelf.\"","EASY DIY INSTALLATION & MAINTENANCE: Fast, DIY-friendly installation. Simply clean the flange, remove the old gasket, and slide the new ring into place. Recommended for use with silicone-based lubricants."]