The Caterpillar 3S9643 O-Ring Seal is a genuine OEM component designed for critical sealing applications in a wide range of Cat articulated trucks, asphalt pavers, challengers, cold planers, compact wheel loaders, and compactors. This high-quality O-ring features an inner diameter of 88.39 mm, an outer diameter of 95.50 mm, and a thickness of 3.56 mm, providing a precise fit and superior sealing integrity. Weighing approximately 0.005 kg, it is engineered to prevent leaks and maintain system pressure, contributing to the optimal performance and longevity of your Caterpillar equipment.