346-5189: 126.95mm Diameter Rod U-cup Spring Seal

Description: A U-cup spring seal is a hydraulic seal designed to prevent leakage of hydraulic fluid and maintain the system's pressure by sealing the gap between the piston and the cylinder bore. It has a built-in energizing spring that provides a radial force against the sealing lip. This spring helps maintain a constant contact pressure between the seal and the cylinder bore, ensuring effective sealing even under varying operating conditions. Attributes: • Designed to withstand high pressure. • Designed to withstand high and low temperatures. • Withstand the abrasive nature of hydraulic fluids and resist wear over time. Applications: A U-cup spring seal is used for maintaining system integrity and preventing loss of hydraulic pressure. It is extensively used in Cat 992H, 993, and 993K Wheel Loaders.