Rod Seal Solutions for Excavator Cylinders — Polypac

Rod Seal for Excavator Cylinders — Overview

Polypac supplies High Quality rod seal for excavator cylinders engineered to withstand heavy-duty shock loads, abrasive particles, and wide temperature swings. Built for long life and minimal leakage, our rod seals ensure smooth cylinder retraction and extended equipment uptime across construction and mining fleets.

Materials & Performance Characteristics

We manufacture rod seals from a broad range of compounds including filled PTFE (bronze, carbon, graphite, MoS₂, glass), NBR, FKM, silicone, EPDM and FFKM. These materials are selected to balance friction, extrusion resistance, and chemical compatibility — delivering reliable sealing performance in oil, hydraulic fluids and contaminated environments.

Custom Design for Special Working Conditions

Polypac specializes in custom rod seal for excavator cylinders tailored to specific bore sizes, rod finishes and operating pressures. Our in-house engineering team collaborates with clients to optimize lip geometry, backup rings and energizers for leak-free sealing under shock and misalignment.

Manufacturing Capacity & Advanced Equipment

With over 10,000 m² site area and 8,000 m² factory space, Polypac combines high-capacity production with precise molding and machining. Our advanced production and testing equipment supports both prototype runs and large OEM orders while maintaining tight tolerances and consistent quality.

Testing, Quality Control & Research Partnerships

Every rod seal for excavator cylinders undergoes comprehensive testing—dimensional, endurance, friction and aging tests—to ensure field reliability. Founded in 2008, we maintain long-term R&D collaborations with universities and institutes to refine sealing materials and technologies.

Applications & Benefits

Ideal for excavators, hydraulic breakers, cranes and heavy machinery, Polypac rod seals reduce downtime, lower maintenance costs and protect cylinder internals from contamination. Our sealing solutions improve oil retention and provide consistent performance in extreme work sites.

Why Choose Polypac

As a scientific and technical hydraulic seal manufacturer and oil seal supplier, Polypac delivers engineering-led solutions, rapid customization and scalable production. Contact us for sample testing, material recommendations and OEM partnerships for rod seal for excavator cylinders.