Excavator Piston Seal — Polypac High-Performance Hydraulic Seals

Excavator Piston Seal Solutions by Polypac

Overview

Polypac offers a comprehensive line of Excavator Piston Seal products engineered to protect hydraulic cylinders in the most demanding earthmoving environments. Since 2008 we have specialized in advanced sealing systems and materials, expanding from filled PTFE technologies to a wide range of elastomers including NBR, FKM, EPDM, silicone and high-performance FFKM.

Materials & Design

Our Excavator Piston Seal designs combine low-friction filled PTFE composites (bronze, carbon, graphite, MoS2, glass) with high-strength elastomer backup rings to deliver reliable sealing under heavy loads. Seals are optimized for high pressure, rapid reciprocation and abrasive slurry conditions common to excavator hydraulic circuits, reducing wear and extending service life.

Performance & Testing

Polypac's 10,000+ sqm custom rubber and O-ring factory houses industry-leading production and testing equipment. Every Excavator Piston Seal undergoes stringent dimensional, pressure, leakage and durability testing. Our R&D collaborations with universities and research institutions ensure continuous improvement in frictional performance, extrusion resistance and temperature stability.

Customization & Manufacturing

We provide tailored sealing solutions — from material compound selection to profile geometry and tolerances — matched to specific working conditions. With advanced molding, machining and QA capabilities across an 8,000 sqm production area, Polypac delivers scalable manufacturing for OEMs and aftermarket needs, including rapid prototyping and small batch customization.

Applications & Benefits

Polypac Excavator Piston Seal products are ideal for hydraulic cylinders in excavators, backhoes and heavy construction equipment. Benefits include lower friction, improved energy efficiency, reduced maintenance intervals, and superior resistance to pressure spikes, heat and contaminated media.

Why Choose Polypac

As one of China’s largest dedicated seal manufacturers, Polypac combines material science, precision production and rigorous testing to create Excavator Piston Seal solutions that perform under extreme conditions. Contact us for specification support, material recommendations and custom seal development to extend equipment uptime and lower total cost of ownership.