Polypac Custom Piston Seals — Precision PTFE & Rubber Solutions

Custom Piston Seals by Polypac — Precision, Materials, Performance

Overview: Tailored sealing solutions

Polypac specializes in manufacturing custom piston seals for hydraulic and pneumatic systems. Combining decades of material science and production expertise, we deliver seals optimized for pressure, temperature, speed, and aggressive media. Whether you need standard sizes or bespoke geometries, our solutions improve system life, reduce leakage, and cut maintenance costs.

Materials & formulation capabilities

Our roots in filled PTFE technology—bronze-filled, carbon-filled, graphite, MoS₂-filled, and glass-filled PTFE—give us a unique advantage in low-friction, wear-resistant piston seals. We also produce O-rings and rubber seals from NBR, FKM, silicone, EPDM, and FFKM to meet dynamic sealing demands. The right polymer formulation is matched to your operating conditions to ensure optimal sealing performance.

Manufacturing scale & quality assurance

With a 10,000+ m² facility and 8,000 m² production area, Polypac is one of China’s largest specialized seal manufacturers. Our production and testing equipment are industry-leading, and we maintain long-term collaborations with universities and research institutions at home and abroad. Tight process control and comprehensive testing translate to consistent, reliable custom piston seals.

Applications & performance benefits

Polypac custom piston seals are engineered for hydraulic cylinders, mobile equipment, industrial presses, and high-cycle actuators. Benefits include superior wear resistance, low friction, excellent chemical compatibility, and stable performance across wide temperatures—delivering longer service life and fewer system failures.

Why choose Polypac

As a scientific and technical hydraulic seal manufacturer and oil seal supplier, Polypac blends R&D strength with manufacturing scale. Our expertise in sealing material development and customized solutions for special working conditions ensures your piston seals meet demanding specifications and regulatory standards.

Get started: design, prototyping, supply

Contact Polypac for consultation, material recommendations, rapid prototyping, and mass production of custom piston seals. We provide technical support, material data, and testing reports to accelerate your development cycle and ensure field-proven performance.