The JCB 20951861 Backup Ring is a genuine OEM component designed to support and protect hydraulic seals from extrusion under high pressure. This essential part maintains the integrity and longevity of hydraulic systems in a wide range of JCB construction and agricultural machinery, including excavators, telehandlers, and backhoe loaders. Manufactured to JCB's stringent quality standards, it ensures reliable performance and prevents costly fluid leaks. With dimensions of 38 mm length, 38 mm width, and 6 mm height, and a weight of approximately 0.005 kg, this backup ring is engineered for precise fit and optimal function.