The Doosan genuine O-Ring part number 40100200732 is a critical sealing component designed for various Doosan heavy machinery. Made from durable NBR (Nitrile Butadiene Rubber) material, this O-ring provides an effective and long-lasting seal, preventing leaks in hydraulic and fluid systems. With an inner diameter of 73.2 mm, an outer diameter of 79.2 mm, and a thickness of 3 mm, it is an essential replacement part for maintaining optimal performance and integrity of Doosan excavators, wheel loaders, and articulated dump trucks.