This is a genuine JCB 25988349 O-Ring, manufactured from durable NBR (Nitrile Butadiene Rubber) for reliable sealing performance. It features an inside diameter of 10.77 mm, an outside diameter of 14.55 mm, and a thickness of 1.82 mm. This OEM O-ring is designed to fit various JCB agricultural and construction machinery applications, ensuring a precise and leak-free seal.