The John Deere M4125T O-Ring Packing is a genuine OEM component designed to provide a secure and leak-proof seal in a wide range of John Deere agricultural and lawn care equipment. This durable O-ring is crucial for maintaining system integrity and preventing fluid leaks in critical applications. With an outside diameter of 19.05 mm, an inside diameter of 12.7 mm, and a thickness of 3.175 mm, it meets precise specifications for optimal performance across numerous John Deere models.