393-7934 Stick Cylinder Seal Kit for Caterpillar 311D LRR 311F LRR Excavator

Premium 393-7934 Stick Cylinder Seal Kit for Caterpillar Excavators

Eliminate hydraulic fluid leaks and restore the powerful digging force of your excavator’s stick cylinder with the WINSCHEN premium 393-7934 Seal Kit. Engineered specifically for Caterpillar’s demanding earthmoving environments, this high-quality aftermarket repair kit withstands extreme pressures, heavy payloads, and continuous operation to ensure your equipment runs safely and efficiently.

Key Features and Selling Points

• Manufactured to strict OEM specifications, ensuring a precise and seamless fit for the stick hydraulic cylinders (including cylinder 385-2883) used in CAT 311D LRR and 311F LRR excavators.
• Constructed from advanced elastomeric and heavy-duty PTFE materials, providing exceptional resistance to high hydraulic pressure, continuous rod friction, and extreme thermal variations.
• Effectively eliminates internal fluid bypass and external leakage, preventing stick drift and maintaining responsive, consistent hydraulic control.
• This comprehensive repair solution contains all essential components—such as wiper seals, U-cups, buffer seals, O-rings, backup rings, and wear rings—required for a complete and reliable cylinder overhaul.
• A cost-effective, highly reliable aftermarket alternative that meets or exceeds original equipment standards, minimizing your machine’s routine maintenance downtime.

Compatible Equipment Models

Based on official catalog and parts cross-reference data, the 393-7934 seal kit services the stick cylinders of the following Caterpillar equipment:

• Excavators: 311D LRR, 311F LRR
• Associated Cylinder: 385-2883 (Cylinder As-Stick)
• Application: Stick / Arm Cylinder Hydraulic Service

Specifications

To guarantee 100% fitment, please verify your machine’s model, serial number, and original cylinder part number with our dedicated support team prior to purchasing. We proudly offer fast and reliable global shipping to keep your projects on schedule.