Hayward Sand Filter S245T, S190T, GM195, 225, 245 Series Hayward Sand Filter S245T, S190T, GM195, 225, 245 Series Hayward GM Series Sand Filter GM140, 142-6 Series Hayward GM Series Sand Filter GM152, 152HV Series Hayward S140T, S144T Pro Series Sand Filter Hayward S164T, S166T Pro Series Sand Filter Hayward Pro Series Sand Filter S180T, 210T, 220T, 244T Hayward Pro Series Sand Filter S210S, 220S, 244S, 310S Hayward Pro Series Sand Filter S310T, S310T2 Series Hayward Pro Series Plus Sand Filter S311SX, 311XV, 360SX Hayward Sand Filter S245T, S190T, GM195, 225, 245 Series Hayward Multiport Valve Model SP071620T It is best to replace O-RING every 3-4 months, depending on the use environment, temperature, water quality pH influence. Maintain pump and filter performance and don't wait for water leakage before doing measures EASY TO INSTALL: Remove old o-ring. Clean channel where o-ring was. Apply lubricant to new o-ring. Insert o-ring in channel. Enjoy your pool! Please check the size and your Hayward sand filter model before order. ProductSiteLaunchDate : 2023-01-05T08:00:01.000Z Size : 1-Pack StreetDate : 2023-01-05T00:00:01Z Style : UNIQ series SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredHasProductIdentifierExemption : 1 TargetGender : unisex Theme : No Theme UnitCount : 1 WarrantyDescription : Limited Lifetime WarrantyType : Lifetime