The Toro 586340 O-Ring is an authentic OEM replacement part designed to provide a reliable seal in various Toro grounds care and utility machines. This O-ring ensures proper fluid containment and prevents leaks, maintaining the optimal performance and longevity of your equipment. With an inner diameter of 19.05 mm, outer diameter of 23.83 mm, and a thickness of 2.39 mm, it meets precise specifications for a secure fit.