Specification Brand : Advantage Manufacturing, Inc. BulletPoint : Lock Washer, Sonfarrel/Martec Spa Master. BulletPoint1 : DIRECT REPLACEMENT: Specifically designed to fit Hayward Star-Clear filter models CX250F C250 C500 C750 C1000 without any modifications needed BulletPoint2 : PRECISE DIMENSIONS: Manufactured to the exact same size as the original equipment gasket at 1/8" thickness and 4-5/8" diameter to ensure a proper seal BulletPoint3 : SUPERIOR MATERIAL: Constructed of durable yet flexible synthetic rubber that withstands water chemistry variations and prevents leaks for long-lasting performance BulletPoint4 : EASY INSTALLATION: Simply slide the new gasket into place - no adhesives or tools required for quick and hassle-free replacement in minutes BulletPoint5 : MAXIMIZE FILTRATION: Replacing the worn gasket restores filter efficiency to capture more debris and balance water chemistry for crystal clear results BulletPoint6 : 【Customer Service】The Boltigen 2inch PVC Shut Off Valve for Pool has 12 months warranty, great friendly 24/7 customer service, any question about the Boltigen 2inch PVC Ball Valve with NPT Threaded, please let us know first time, we will be glad to help you. Color : black ExternallyAssignedProductIdentifier1 : 0605380884686 ExternallyAssignedProductIdentifier2 : 605380884686 ItemName : Advantage MFG 300-011 ItemPackageDimensions_Height : 0.5 inches ItemPackageDimensions_Length : 1.4 inches ItemPackageDimensions_Width : 0.9 inches ItemPackageQuantity : 1 ItemShape : Round ItemTypeKeyword : swimming-pool-heater-and-heat-pump-parts ItemTypeName : CX250F Filter Gasket Replacement Manufacturer : Advantage Manufacturing Material : metal MaximumVoltage : 370 volts ModelName : CX250F Filter Gasket Replacement ModelNumber : 300-011 NumberOfBoxes : 1 NumberOfItems : 1 OperatingVoltage : 370 volts PartNumber : 300-011 PowerSourceType : ac ProductDescription : Lock Washer, Sonfarrel/Martec Spa Master ProductSiteLaunchDate : 2020-11-19T09:26:45.000-08:00 Size : 2 Inch SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredHasProductIdentifierExemption : 1 UnitCount : 1