6Pack 1.5 inch Threaded Winterizing Plugs with ORings for Pool Filters Keep your pool filter ports sealed during winterizing and maintenance with a convenient 6 pack of threaded 11/2 inch plugs. Each plug includes a mating Oring for improved sealing and easier installation. Key benefits Prevents water intrusion during winter storage and maintenance, reducing the chance of freeze related damage to filter components. Replacement set for lost or damaged plugs so you can complete winterizing or repairs without delays. Includes Orings to provide a snug, reliable seal in threaded filter ports. Six plugs per pack for full coverage of multiple ports or spare parts for future use. What this product does Threads into standard 11/2 inch filter ports to block flow and seal openings during winterizing or when performing filter service. Oring improves sealing performance compared to plug alone, helping to maintain a watertight closure. Compatibility and specifications Size: threaded 11/2 inch nominal, also described as 1.5 inch. Quantity: 6 plugs with Orings. Compatibility: replacement for Hayward SP1022C. Practical use scenarios Winterizing a pool filter: Install plugs in filter ports after draining to help keep residual water out of the system while the pool is closed for the season. Routine maintenance and repairs: Use plugs to seal ports when removing cartridges or replacing components so work area stays dry and clean. Spare parts kit: Keep the set in your maintenance toolbox for quick replacement if a factory plug is lost or damaged. Installation tips Clean threads and seating area before installing the plug and Oring. Lubricate the Oring lightly with a compatible lubricant if recommended by your filter manufacturer to ease installation and avoid twisting the Oring. Hand thread first, then tighten snugly. Do not overtighten. This 6pack provides a practical, ready to use replacement option for maintaining a tight seal on 11/2 inch filter ports. Compatible replacement for Hayward SP1022C.