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Seal compatible #6 air conditioning hose connections with this genuine Morgan Olson OEM O-ring. The O-ring is used at A/C hose assembly joints to help maintain a tight refrigerant seal and reduce the risk of leaks. Proper sizing is critical in climate-control systems, making the correct OEM replacement important during hose or component service. Morgan Olson OEM sealing components help support reliable A/C performance and accurate fleet repairs.