КОЛЬЦО Caterpillar 4438878

The Rear Axle Mounting Pin Seal Ring controls the flow of lubricants and blocks the entry of dust, dirt, and moisture at the interface where the mounting pin connects within the rear axle assembly. It is positioned around the mounting pin area to create a tight sealing barrier that maintains internal lubrication while preventing external contamination from entering the joint. The mounting pin undergoes movement and load variations, and the seal ring adapts to these changes by maintaining continuous contact and sealing effectiveness.Attributes:• Supports reliable motion by preserving internal conditions.• Reduces risk of lubrication loss during rotation or movement.• Maintains sealing contact during movement of the mounting pin.Applications: The Rear Axle Mounting Pin Seal Ring is used at the mounting pin location within the rear axle assembly, where it seals the interface between connected components and maintains a protected, lubricated environment during operation.