[] 6Pack R0586300 Large Collar O-rings are perfect replacement for Zodiac Fusion Soft, Fusion Inground, Vision Aboveground, Above Ground, Fusion, FSOFT700, FSOFT1400, Scorpio Crystals, 280, 380, Back up Valve & more. Replace Part Number: R0586300. Also replace the "O-Ring, Large Collar" listed in the manufacturer part numbers R0502500 and R0502300. [Good Seal, No Leaks] Constructed of premium-grade material for better sealing performance without leakage. good abrasion resistance, decent tensile strength. handle both high and low temperatures. Smooth , no burrs, better fit and provide long-lasting and reliable use without deformation. Upgrade your good sealing and enjoy a wonderful swimming time. [Easy Installation] It takes a breeze to install. Simply turn off pool pump, filter and valves. Unscrew large collar and take chIorine tab feeder out. Replace the large O-ring and make sure it's secure in the groove on the vessel top, not on the underside of the cap. Put everything back and you're ready to go. Please note:There may be slight color difference or discrepancy in the actual product, which does not affect the use, please don't mind, thank you! Color:As Shown Material:Plastic Package Contents: 6 * R0586300 Large Collar O-rings Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.