CAT 208-2911 174-4916 Seal Kit for Caterpillar Excavator Hydraulic Cylinder Rebuild

Description

Complete hydraulic cylinder seal kit containing CAT part numbers 208-2911 and 174-4916, designed for Caterpillar excavator hydraulic cylinder overhaul and maintenance. This comprehensive kit includes the primary piston seal assembly (208-2911) and the rod seal with wiper combination (174-4916), providing all seals necessary for a complete cylinder rebuild. The seals are manufactured from Caterpillar-specified materials including high-performance polyurethane piston seals and nitrile rubber rod seals with fabric reinforcement. Designed specifically for CAT excavator boom, arm, and bucket cylinders in a wide range of Caterpillar models. The 208-2911 piston seal features a asymmetric design that provides superior sealing under varying pressure conditions common during excavation cycles. The 174-4916 rod seal incorporates a dual-lip design with integrated wiper function to prevent contamination from entering the hydraulic cylinder. Both seals are precision-machined to exact OEM tolerances ensuring leak-free operation. Temperature range from -30°C to +85°C. Each seal kit is individually packaged with installation orientation markings for error-free fitting.