Polypac Piston Seals — Reliable Hydraulic Sealing Solutions

Polypac Piston Seals — Precision Engineering for Demanding Hydraulic Systems

Overview

Polypac is a scientific and technical hydraulic seal manufacturer and oil seal supplier specializing in piston seals, sealing material development, and customized sealing solutions for special working conditions. Founded in 2008, our factory spans over 10,000 m² with 8,000 m² of production space and advanced production and testing equipment—making Polypac one of China’s largest dedicated seal developers.

Materials & Technology

We produce piston seals using a broad range of materials to match pressure, speed, temperature, and media requirements. Our heritage in filled PTFE (bronze, carbon, graphite, MoS₂, glass) provides low-friction, high-wear options, while elastomers such as NBR, FKM, EPDM, silicone, and FFKM deliver elasticity and chemical resistance. Polypac’s material science team fine-tunes compound formulations to optimize seal life and hydraulic efficiency.

Customization & Testing

Every application is unique—so are our piston seals. We offer tailored seal geometries, surface treatments, and composite constructions for extreme pressures, high temperatures, abrasive media, and vacuum environments. Our in-house testing lab and advanced quality control systems validate wear, leakage, and friction performance. Long-term collaborations with universities and research institutes ensure our solutions are backed by the latest research and standards.

Applications

Polypac piston seals serve a wide range of industries: mobile and industrial hydraulics, construction machinery, marine and offshore equipment, oil & gas, agricultural machinery, and aerospace actuators. We design seals for cylinders, accumulators, and bespoke hydraulic assemblies where reliability and durability are critical.

Why Choose Polypac

Choosing Polypac means choosing proven expertise, rapid prototyping, and scalable manufacturing. Our advanced equipment, rigorous QC, and material innovation reduce downtime and total cost of ownership. We support OEMs and maintenance teams with fast sample turnaround, certifications, and long-term technical partnerships.

Technical Support & Ordering

Need help selecting or customizing piston seals? Provide drawings, operating conditions, or sample parts—our engineering team will recommend optimized designs, materials, and testing protocols. Contact Polypac for quotes, material datasheets, and design collaboration to ensure your hydraulic systems run cleaner, quieter, and longer.